Virtual speaker demonstration system and virtual noise simulation

• US 7,096,169 B2
• Filed: 05/16/2002
• Issued: 08/22/2006
• Est. Priority Date: 05/16/2002
• Status: Active Grant

• Current Assignee: Crutchfield Corporation
• Original Assignee: Crutchfield Corporation
• Inventors: Crutchfield, William G. Jr.
• Primary Examiner(s): Rodriguez, Paul L.
• Assistant Examiner(s): Sharon, Ayal I.
• Application Number:
  US10/147,476
• Publication Number:
  US 20030215097A1
• Time in Patent Office: 1,559 Days
• Field of Search: 703/2, 703/7, 381/61, 381/63, 381/71.1, 381/77, 381/79, 381/300
• US Class Current: 703/7
• CPC Class Codes: H04R 29/001 for loudspeakers H04R29/007 takes precedence

Abstract

A virtual speaker demonstration system is disclosed that permits a retail outlet to use a reference speaker to demonstrate the performance of multiple different demonstration speakers. A user interface permits a user to select a demonstration speaker and signal processing is performed so that the output from the reference speaker simulates the output of the selected demonstration speaker. The invention provides benefits to all three of the consumer, the retailer, and the manufacturer. The consumer can listen to and compare multiple demonstration speakers easily and conveniently from the same reference speaker. The retailer to use a single (or few) reference speaker to demonstrate the performance of multiple demonstration speakers, saving costs and space. The manufacturer to be able to display and demonstrate to consumers a broader range of the manufacturer'"'"'s product line.

Claims

1. A system for demonstrating acoustic performance to consumers in order to evaluate different speakers, comprising:

a user interface for selecting options for a consumer, including a selected demonstration speaker model from a plurality of available demonstration speaker models;

a series of stored first characteristic samples reflecting the performance of the plurality of demonstration speaker models, wherein the first characteristic samples are empirically derived;

one or more acoustic input samples for processing to an acoustic output;

a processor for processing an acoustic input sample and a first characteristic sample corresponding to a selected demonstration speaker model;

a reference speaker model for outputting an acoustic signal based on the result of the processing;

the processing compensating for the performance characteristic of the reference speaker and the performance characteristic of the selected demonstration speaker so as to mimic the performance of the selected demonstration speaker while avoiding bias from the reference speaker;

wherein the outputted acoustic signal provides an accurate representation of the performance of the selected demonstration speaker model outputting the acoustic input sample to the consumer;

and further wherein the user interface permits the consumer to select a different demonstration speaker for processing to an acoustic output in order to compare performance between selected speaker models.

2. The system of claim 1, wherein the system is located in a reference room in a retail outlet.

3. The system of claim 1, further comprising a monitor for displaying an image of the selected demonstration speaker model.

4. The system of claim 1, further comprising a data output for outpuffing printed data regarding the selected demonstration speaker model.

5. The system of claim 1, wherein the reference speaker model comprises headphones and the selected demonstration speaker model comprises free standing speakers.

6. The system of claim 1, wherein the reference speaker model comprises first headphones and the selected demonstration speaker model comprises second headphones.

7. The system of claim 1, wherein the system enables a single reference speaker model to simulate the performance of multiple demonstration speaker models.

8. The system of claim 1, further comprising a series of stored second characteristic samples reflecting the performance of a plurality of demonstration spaces, and wherein the processor is further adapted to process a second characteristic sample corresponding to a selected demonstration space, and wherein the processed result renders an acoustic signal that simulates the performance of the demonstration speaker model outputting the acoustic input sample in the selected demonstration space.

9. The system of claim 8, wherein the second characteristic samples are empirically derived.

10. The system of claim 8, wherein the second characteristic samples are analytically derived.

11. The system of claim 1, further comprising a series of third characteristic samples comprising absorption data and a series of fourth data comprising geometry data, wherein the third characteristic samples and the fourth data enable a user to create a demonstration space for the simulation.

12. The system of claim 8 or claim 11, wherein the user interface enables a user to select the location of the demonstration speaker model in the demonstration space.

13. The system of claim 8 or claim 11, wherein the demonstration space comprises a room.

14. The system of claim 8 or claim 11, wherein the demonstration space comprises the inside of a vehicle.

15. The system of claim 14, wherein the user interface comprises options for selecting at least one of environmental conditions or operational conditions.

16. The system of claim 15, wherein the selectable conditions comprise at least two of the following:

a vehicle make;

a vehicle model;

speed;

RPM;

gear;

engagement of convertible top or sunroof;

engagement of windows; and

seating location.

65. The system of claim 1, wherein there is a plurality of acoustic input samples;

further wherein;

the user interface permits the consumer to select a specific acoustic input sample from the plurality of acoustic input samples.

66. The system of claim 1, wherein the system is adapted to permit the consumer to input the acoustic input sample for the acoustic demonstration, further comprising:

an input for inputting an acoustic input sample supplied by the consumer to the processor for processing.

67. The system of claim 1, wherein the first characteristic comprises the performance characteristic of the selected demonstration speaker model adjusted by the performance characteristic of the reference speaker model.

17. A system for demonstrating acoustic performance to consumers in order to evaluate different speakers, comprising:

a user interface for selecting options for a consumer including a selected demonstration speaker out of a plurality of available demonstration speakers;

a series of stored transfer characteristics reflecting representing the performance of the plurality of demonstration speakers, said transfer characteristics being represented in any suitable domain including but not limited to the frequency domain or time domain;

an input for inputting an acoustic sample comprising music or other audio data;

a processor for processing a stored transfer characteristic corresponding to the selected demonstration speaker and the acoustic sample; and

reference speakers for outputting an acoustic signal corresponding to the processed result,

the processing compensating for the performance characteristic of the reference speaker and the performance characteristic of the selected demonstration speaker so as to mimic the performance of the selected demonstration speaker while avoiding bias from the reference speaker;

wherein the outputted acoustic signal provides an accurate representation of the acoustic performance of the selected demonstration speaker outputting the acoustic sample to the consumer.

18. The system of claim 17, further comprising a monitor for displaying an image of the selected demonstration speaker.

19. The system of claim 17, further comprising a data output for outputting printed data regarding the selected demonstration speaker.

20. The system of claim 17, wherein the reference speakers comprise first headphones and the selected demonstration speaker comprises second headphones.

21. The system of claim 17, wherein the reference speakers comprise headphones and the selected demonstration speaker comprises free standing speakers.

22. The system of claim 17, wherein the input comprises a memory that can be accessed to retrieve the acoustic sample from a plurality of acoustic samples stored therein.

23. The system of claim 17, wherein the input comprises a CD player, a DVD player, or an Internet site.

24. The system of claim 17, wherein the processor is adapted to compensate for the reference speakers, simulate the selected demonstration speaker, and apply the acoustic sample.

25. The system of claim 24, wherein the compensation for the reference speakers comprises inverse filtering.

26. The system of claim 25, wherein the inverse filtering is implemented in the time domain as a convolution based on a impulse response.

27. The system of claim 25, wherein the inverse filtering is implemented in the frequency domain as multiplication based on a transfer function.

28. The system of claim 24, wherein the simulation of the selected demonstration speaker comprises filtering.

29. The system of claim 28, wherein the filtering is implemented in the time domain as a convolution with a impulse response.

30. The system of claim 28, wherein the filtering is implemented in the frequency domain as multiplication by a transfer function.

31. The system of claim 17, wherein the user interface includes an option for selecting a demonstration environment out of a plurality of demonstration environments, and further wherein the processor is adapted to simulate a selected demonstration environment.

32. The system of claim 31, wherein the processor is further adapted to compensate for a reference environment in which the acoustic performance is demonstrated.

33. The system of claim 32, wherein the compensation of the reference environment is performed using inverse filtering.

34. The system of claim 32, wherein the reference environment is a listening room in a retail outlet.

35. The system of claim 17, wherein the user interface includes an option for building a demonstration environment, and further wherein the processor is adapted to simulate the demonstration environment.

36. The system of claim 35, wherein the option for building a demonstration environment includes at least one of selectable absorption characteristics and geometry.

68. The system of claim 25, wherein the inverse filtering is implemented as a combination of time domain processing and frequency domain processing operations.

69. The system of claim 28, wherein the filtering is implemented as a combination of time domain processing and frequency domain processing operations.

70. The system of claim 24, wherein the processor implements filtering to simulate the selected demonstration speaker and to compensate for the reference speakers, said filtering being implemented as a combination of time domain processing operations and frequency domain operations.

71. The system of claim 24, wherein the processor implements filtering to simulate the selected demonstration speaker and to compensate for the reference speakers, said filtering being implemented using frequency domain processing operations.

72. The system of claim 24, wherein the processor implements filtering to simulate the selected demonstration speaker and to compensate for the reference speakers, said filtering being implemented using time domain processing operations.

73. The system of claim 17, wherein the input for inputting an acoustic input sample is adapted to permit the consumer to input the acoustic input sample for the acoustic demonstration.

37. A method for simulating acoustic performance to consumers in order to evaluate different speakers, comprising:

(a) accessing a user interface that includes options for selecting a demonstration speaker from a plurality of available demonstration speakers;

(b) selecting a demonstration speaker;

(c) performing one of selecting an environment and building an environment;

(d) performing at least one of (1) selecting an acoustic sample from a plurality of stored acoustic samples available from the user interface and (2) the consumer providing an acoustic sample for input for processing;

(e) listening to the output of the selected demonstration speaker on at least one reference speaker; and

(f) repeating at least steps (b) and (e) for a different demonstration speaker so that the user can compare the performance of the demonstration speakers on the same at least one reference speaker;

wherein the output is generated by processing to compensate for the performance characteristic of the reference speaker and the performance characteristic of the selected demonstration speaker so as to mimic the performance of the selected demonstration speaker while avoiding bias from the reference speaker;

wherein the outputted acoustic signal provides an accurate representation of the performance of the selected demonstration speaker model outputting the acoustic sample to the consumer.

38. The method of claim 37, further comprising step of (g) viewing a visual display with an image of the selected demonstration speaker.

39. The method of claim 37, further comprising the step of (g) receiving printed output data regarding the selected demonstration speaker.

40. The method of claim 37, wherein the reference speaker comprises first headphones and the selected demonstration speaker comprises second headphones.

41. The method of claim 37, wherein the reference speaker comprises headphones and the selected demonstration speaker comprises free standing speakers.

42. The method of claim 37, wherein the steps are performed in a listening room in a retail outlet.

43. The method of claim 37, wherein the environment comprises a room or the interior of a vehicle.

44. The method of claim 37, wherein the environment comprises a room and further comprising the step of selecting a location of the demonstration speaker in the room.

45. The method of claim 37, wherein the environment comprises the interior of a vehicle, and further comprising the step of selecting at least one of environmental conditions and operating conditions regarding the vehicle.

46. The method of claim 45, wherein the selectable conditions comprise at least two of the following:

a vehicle make;

a vehicle model;

speed;

RPM;

gear;

engagement of convertible top or sunroof;

engagement of windows; and

seating location.

47. A method for providing an acoustic simulation to consumers in order to evaluate different speakers, comprising:

accessing a stored reference speaker characteristic data;

utilizing the retrieved reference speaker characteristic data to compensate for the effects of the reference speaker;

accessing stored demonstration speaker characteristics data to retrieve a characteristic for a selected demonstration speaker, there being stored such demonstration speaker data for a plurality of demonstration speakers so that the consumer can compare performance between selected demonstration speakers;

utilizing the retrieved demonstration speaker characteristic data;

accessing stored environmental characteristics data to retrieve a characteristic for a selected environment, there being stored such environmental data for a plurality of environments;

utilizing the retrieved environmental characteristic data;

applying an acoustic sample; and

outputting the processed result to the reference speaker for presentation to the consumer;

the output mimicking the performance of the selected demonstration speaker using the reference speaker and providing an accurate representation of the performance of the selected demonstration speaker outputting the acoustic sample to the consumer and avoiding bias from the reference speaker.

48. The method of claim 47, further comprising the step of providing a visual display of an image of the selected demonstration speaker.

49. The method of claim 47, further comprising the step of outputting printed data regarding the selected demonstration system.

50. The method of claim 47, wherein the reference speaker comprises first headphones and the demonstration speaker comprises second headphones.

51. The method of claim 47, wherein the reference speaker comprises headphones and the demonstration speaker comprises free standing speakers.

52. The method of claim 47, further comprising the steps of:

accessing a stored environment characteristic; and

utilizing the stored environment characteristic to remove the effects of the reference environment.

53. The method of claim 47, wherein the characteristic for a selected environment is created by user selection from an interface allowing selection of absorption parameters and geometry.

54. The method of claim 47, further comprising the step of retrieving the acoustic sample from a plurality of acoustic samples.

55. The method of claim 47, wherein the acoustic sample is received as an input from a user.

56. The method of claim 55, wherein the user inputs the acoustic sample from a CD or DVD or other acoustic data input.

57. The method of claim 47, further comprising the step of retrieving the acoustic sample from an Internet site.

58. A method for providing a virtual noise simulation to a consumer in order to compare vehicles or operating conditions for a vehicle, comprising:

providing a user interface for selecting options for simulating an acoustic environment for a vehicle, wherein the options enable the user to select from among a plurality of vehicles, and further wherein the options enable to user to select from a plurality of operating conditions for a specific vehicle;

receiving user selections of the options; and

providing a virtual noise simulation to the consumer based on the selected options,

wherein the virtual noise simulation provides an acoustic output representing the acoustic environment of the specific vehicle while in operation and

receiving new user selections changing at least one of the selected vehicle and the selected operating condition;

providing a modified virtual noise simulation to the consumer in order to allow the consumer to compare the different acoustic environments corresponding to the different consumer selections.

59. The method of claim 58, wherein the vehicle comprises a car, boat, or plane.

60. The method of claim 59, wherein the vehicle comprises a car, and wherein the options include at least three four of the following:

make, model, engine size or type, speed, RPM, gear, engagement status of sunroof or convertible top, engagement status of windows, and the location of listener.

61. The method of claim 59, wherein the vehicle comprises a boat, and wherein the options include at least four of the following:

make, model, engine size or type, speed, RPM, sea state, and location of listener.

62. The method of claim 59, wherein the vehicle comprises a boat, and wherein the options include a two-cycle engine and a four-cycle engine, thereby enabling the user to compare the acoustic performance of the boat equipped with a two-cycle engine to the acoustic performance of the boat equipped with a four-cycle engine.

63. The method of claim 59, wherein the method is practiced at a car dealership in order to allow consumers to compare the acoustic performance of various cars under various operating conditions.

64. The method of claim 59, wherein the method is practiced at a boat dealership in order to allow consumers to compare the acoustic performance of various boats under various operating conditions.

74. A computer-implemented method of implementing a virtual speaker demonstration to consumers in order to evaluate different speakers, comprising:

selecting a plurality of demonstration speakers for demonstration to consumers who can select different demonstration speakers for evaluation;

storing a plurality of response characteristic data corresponding to the plurality of demonstration speakers;

selecting a reference speaker to be used to demonstrate the performance of the demonstration speakers to consumers;

evaluating the response characteristic of the reference speaker to determine compensation for compensating for the response characteristic of the reference speaker;

processing the response characteristic data of a specific demonstration speaker;

processing an acoustic sample;

outputting an acoustic signal to the consumer using the reference speaker to accurately mimic the performance of the specific demonstration speaker while avoiding bias from the reference speaker.

75. The computer-implemented method of claim 74, wherein evaluating the response characteristic of the reference speaker results in a determination of a compensation for accurate demonstration of the demonstration speakers, further comprising:

processing to compensate for the response characteristic of the reference speaker.

76. The computer-implemented method of claim 75, wherein the processing to compensate is implemented using inverse filtering.

77. The computer-implemented method of claim 75, wherein the processing to compensate is implemented by processing in the frequency domain.

78. The computer-implemented method of claim 75, wherein the processing to compensate is implemented by processing in the time domain.

79. The computer-implemented method of claim 74, wherein evaluating the response characteristic of the reference speaker results in a determination that compensation for the reference speaker can be avoided while still providing accurate demonstration of the demonstration speakers.