Audio reproduction system with a data feedback channel

• US 20050123143A1
• Filed: 07/14/2004
• Published: 06/09/2005
• Est. Priority Date: 07/14/2003
• Status: Abandoned Application

• Current Assignee: Micronas Gmbh (TDK Corporation)
• Original Assignee: Micronas Gmbh (TDK Corporation)
• Inventors: Bock, Christian, Platzer, Wilfried
• Application Number:
  US10/892,526
• Publication Number:
  US 20050123143A1
• Time in Patent Office: Days
• US Class Current: 381/2
• CPC Class Codes: H04R 2420/07 Applications of wireless loudspeakers or wireless microphones
• CPC Class Codes: H04S 7/301 Automatic calibration of stereophonic sound system, e.g. with test microphone

Abstract

The invention relates to an audio reproduction system with an audio signal delivery device (PC, S, VCR) to supply an audio signal (s, r), a data delivery device (S, A) to supply data (d, rd) for control and/or monitoring purposes, a mixing device (M) to mix the audio signal (r), and data (rd) before these are reproduced in combined form, at least one loudspeaker (L1-L5) to reproduce an acoustic sound signal (sw+sd), a receiving device (MIC, C) to receive the sound signal (sw+sd), and a receiver-side data processing device (PC, C) to process the data (sd) contained in the sound signal (sw+sd) and to trigger corresponding actions to be performed. In order to be able to handle arrangement errors for the loudspeakers, disturbances on the transmission paths of the audio signals to the loudspeakers, or preferred temporary locations of a listener (P), it is proposed that the data processing device (PC, C) together with the receiver for monitoring reproduction conditions be designed in a form analogous to a data feedback channel for the data (rd, sd) together with the audio signal delivery device (PC, S, VCR) and/or the data delivery device (S, A) for the purpose of controlling and/or monitoring these devices.

Claims

1. Audio reproduction system with a feedback channel, comprising

an audio signal delivery device (PC, S, VCR) to supply an audio signal (s, r);

a data delivery device (S, A) to supply data (d, rd) for control and/or monitoring purposes;

a mixing device (M) to mix the audio signal (r) and the data (rd) before their combined reproduction;

at least one loudspeaker (L1-L5) to reproduce an acoustic sound signal (sw+sd) generated from the audio signal (r) and the data (rd);

a receiving device (MIC, C) to receive the sound signal (sw+sd); and

a receiver-side data processing device (PC;

C) to process the data (sd) contained in the sound signal (sw+sd) and to trigger corresponding actions to be performed;

characterized in that

the data processing device (PC;

C) together with the receiving device is in the form of a data feedback channel for the data (rd, sd), including a device preceding the loudspeaker, specifically, the audio signal delivery device (PC;

S, VCR), and/or data delivery device (S, A), to control and/or monitor these devices.

2. Audio reproduction system according to claim 1, in which the data delivery device and the data processing device are in the form of an integrated device (C, PC).

3. Audio reproduction system according to claims 1, in which the at least one loudspeaker (L2-L5) is connected to the audio signal delivery device (S, VCR) and/or the mixing device (M) in order to transmit the audio signal (r) and the data (rd) through an air or wireless interface.

4. Audio reproduction system of claim 1, in which a dedicated signal processing device (C) and the mixing device (M) are assigned to the at least one loudspeaker (L4) in terms of space and design.

5. Audio reproduction system according to claim 1, in which the mixing device (M) is designed to implement psycho-acoustic coding and mixing of the data (rd, sd) such that the data cannot be consciously perceived by a human or animal listener (P).

6. Audio reproduction system of claim 1, comprising a display device (A;

TV) for displaying measures required by an operator (P) to enable or improve reproduction conditions.

7. Audio reproduction system according to claim 4, in which the data processing device (C) and the audio signal delivery device are designed to automatically regulate audio signal intensities for different audio signals out of a plurality of audio signals for different loudspeakers (L1-L5) relative to each other.

8. Method for reproducing at least one audio signal (r), comprising an audio reproduction system, specifically, comprising an audio reproduction system according to a foregoing claim, in which

the at least one audio signal (r) is supplied for reproduction;

at least one data value or data signal is supplied as data (rd);

the audio signal (r) and the data value (rd) are mixed;

the mixed signal (r+rd, s+sd) is emitted through at least one loudspeaker (L1-L5) as an acoustic signal (sw+sd);

the acoustic signal (sw+sd) is received by a receiving device (MIC); and

on the receiver side, the received data (sd, rd) is processed to trigger corresponding actions to be performed;

characterized in that

the data contained on the receiver side (sd, rd) is utilized in a form analogous to feedback data for the transmitter-side procedural steps.

9. Method according to claim 8, in which monitoring is used to determine and display arrangement problems for individual loudspeakers (L1-L5) out of a plurality of loudspeakers used in the audio reproduction system, or corresponding audio signal preprocessing is used to correct these problems, specifically, to regulate these problems in terms of dynamics and/or phase position.

10. Method according to claims 8, in which monitoring is used to determine and display disturbing interference phenomena for individual loudspeakers (L1-L5) out of a plurality of loudspeakers used in the audio reproduction system, or corresponding audio signal preprocessing is used to correct these interference phenomena.

11. Method according to claim 8, in which the receiving device (MIC) is located at the desired temporary location of the listener (P) and the audio signal reproduction is regulated accordingly through individual loudspeakers (L1-L5) out of a plurality of loudspeakers used in the audio reproduction system, specifically, in terms of dynamics and/or phase position.

12. Method according to claim 8, in which error messages are outputted optically through a display device (A;

TV) or acoustically through at least one loudspeaker of the audio reproduction system (L1-L4), which loudspeaker has been determined to be functional.

13. Method according to claim 8, in which the acoustic signal (sw+sd) is used as the data feedback channel to control devices preceding the loudspeaker (L1-L5).

14. Method according to claim 8, in which the data (sd, rd, d) contained on the receiver side is used to monitor and/or control the transmission path and the emission of sound.

15. Method according to claim 8, in which the acoustic signal (sw+sd) is used as the feedback channel for a data input device (F, Fi) preceding the loudspeaker (L1-L5) to control preceding devices.

16. Method according to claim 8, in which preceding devices are controlled by following devices (M) through a combination of the sound path and the streaming channel to form a data feedback channel.

17. (canceled)