Smart bass reflex loudspeaker
First Claim
1. A method for selectively tuning a port from a plurality of ports of a speaker, the method comprising:
- receiving an audio signal, the audio signal including a plurality of audio signal components, wherein an individual audio signal component of the plurality of audio signal components has an associated frequency;
analyzing, by the speaker, the audio signal to determine a first audio signal component to be output from the plurality of audio components, the first audio signal component having an associated first frequency, analyzing the audio signal comprising performing a Fast Fourier Transform (FFT) of the audio signal;
selecting, based at least in part on the first frequency, a first port from the plurality of ports for tuning, wherein;
the first port is tunable within a first frequency range, the first frequency being within the first frequency range; and
a second port of the plurality of ports is tunable within a second frequency range based at least in part on received audio signals;
tuning the first port to the first frequency to output the first audio signal component, wherein tuning the first port comprising one or more of;
changing a shutter position of a shutter coupled to the first port;
changing a length of the first port;
orchanging a cross-sectional area of the first port; and
outputting sound represented by the audio signal.
1 Assignment
0 Petitions
Accused Products
Abstract
A loudspeaker port may include tunable physical components to tune the port to different frequencies to improve speaker efficiency at those frequencies. The ports may be activated by at least partly opening associated shutters, or disabled by closing the associated shutters. Activated ports may enhance speaker efficiency in a frequency range. However, activated ports may also introduce sound artifacts, thereby reducing sound quality. Therefore, the ports may be disabled when appropriate to reduce their negative impact to sound quality. A Digital Signal Processor (DSP) may determine the frequency components of a played sound to determine when to open the ports and how to tune the ports. Accordingly, a loudspeaker may benefit from the improved efficiency facilitated by the ports while also avoiding typical drawbacks created by the ports.
7 Citations
20 Claims
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1. A method for selectively tuning a port from a plurality of ports of a speaker, the method comprising:
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receiving an audio signal, the audio signal including a plurality of audio signal components, wherein an individual audio signal component of the plurality of audio signal components has an associated frequency; analyzing, by the speaker, the audio signal to determine a first audio signal component to be output from the plurality of audio components, the first audio signal component having an associated first frequency, analyzing the audio signal comprising performing a Fast Fourier Transform (FFT) of the audio signal; selecting, based at least in part on the first frequency, a first port from the plurality of ports for tuning, wherein; the first port is tunable within a first frequency range, the first frequency being within the first frequency range; and a second port of the plurality of ports is tunable within a second frequency range based at least in part on received audio signals; tuning the first port to the first frequency to output the first audio signal component, wherein tuning the first port comprising one or more of; changing a shutter position of a shutter coupled to the first port; changing a length of the first port;
orchanging a cross-sectional area of the first port; and outputting sound represented by the audio signal. - View Dependent Claims (2, 3, 19, 20)
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4. A method for tuning a plurality of ports of a speaker, the method comprising:
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analyzing an audio signal to determine a frequency component of the audio signal; selecting, based at least in part on the frequency component, a first port to tune from the plurality of ports of the speaker, the first port being tunable within a first frequency range, wherein the frequency component of the audio signal is within the first frequency range; tuning the first port to the frequency component, wherein tuning the first port comprises changing at least one or more of; a shutter position of the first port, a length of the first port, or a cross-sectional area of the first port; deactivating at least a second port of the plurality of ports; and outputting sound represented by the audio signal. - View Dependent Claims (5, 6, 7, 8)
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9. A device comprising:
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a driver; a plurality of ports, the plurality of ports including at least; a first port that is tunable within a first tunable frequency range based at least in part on received audio signals; and a second port that is tunable within a second tunable frequency range based at least in part on the received audio signals; and one or more non-transitory computer readable media storing computer-executable instructions that, when executed by one or more processors, cause the one or more processors to perform acts comprising; receiving an audio signal; analyzing the audio signal to determine a frequency component of the audio signal; selecting the first port of the plurality of ports for tuning based, at least in part, on the frequency component of the audio signal being within the first tunable frequency range associated with the first port; and outputting sound represented by the audio signal. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification