Audio communication system with bitrate indication

An audio signal and audio technology, applied in the field of audio generation devices, can solve problems such as inability to support high-fidelity sound quality, damaged speaker system brand reputation, and low bit rate

Inactive Publication Date: 2010-09-08
BOSE CORP
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

SNK (which can be a hi-fi A2DP stereo speaker system) has to decode audio at the same bitrate chosen by SRC, even if the bitrate is too low to support hi-fi sound quality
If the bitrate is too low, the result is that the audio reproduction at SNK will contain multiple audio distortions and artifacts that were not present in the original audio source contained on SRC
[0004] Users of the system may not understand that the audio quality can be greatly affected by the A2DP process and the choices the SRC has to make when selecting the bitrate
Also, the user may not realize that the A2DP process m

Method used

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  • Audio communication system with bitrate indication
  • Audio communication system with bitrate indication
  • Audio communication system with bitrate indication

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Embodiment Construction

[0014] A wireless audio playback device, such as a wirelessly powered speaker device or a wireless headphone device, can provide the user with a clear indication of the status of the wireless connection and the quality of the received audio signal. The bit rate of data received by a wireless audio playback device can be a good predictor of the level of audio quality, and the device can use the received bit rate to present a clear indication of the quality of the received signal. By clearly displaying this information, the user can better understand the system's operating conditions and take steps to correct a poor wireless connection (for example, by moving the wireless source device closer to the wireless audio playback device and / or away from interfering devices ).

[0015] For example, if figure 1 and figure 2 As shown, an audio production system 10 includes a housing 12 and a substantially acoustically transparent speaker grill 14 . Behind the grille 14 are two speaker...

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Abstract

An audio producing device includes a receiver for wirelessly receiving a digital audio signal from an audio source device. The audio source device may transmit the digital audio signal at a variable bitrate. A logic device determines whether the bitrate at which the audio signal is received is below a predetermined threshold. A first indicator provides an indication to a user of the system when the bitrate is below the threshold. An electro-acoustic transducer utilizes information in the digital audio signal to produce audio out loud.

Description

technical field [0001] The present invention relates to the field of wireless audio, and more particularly to audio producing devices. Background technique [0002] A Bluetooth device can stream audio data from a source device (SRC) to a sink device (SNK) over a wireless link using the Advanced Audio Distribution Profile (A2DP) defined by the Bluetooth standard. The definition of A2DP allows the use of a sub-band codec (SBC) compression scheme to encode audio information before transmitting it over a wireless link. The SBC can use one of several bitrates specified in the A2DP definition. The audio quality achievable with SBC varies from high quality, where audio artifacts are barely perceptible, to bitrates, where audio artifacts are noticeable. [0003] The SRC device (which may be a phone storing MP3 music files) chooses the bit rate at which to encode the audio stream sent across the wireless link. The SNK (which may be a hi-fi A2DP stereo speaker system) must decode t...

Claims

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Application Information

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IPC IPC(8): H04S7/00
CPCH04R5/02G06F1/1632H04R2205/021H04R2205/022H04R2420/07
Inventor J·P·穆尔维W·M·拉比诺维茨J·特罗特尔
Owner BOSE CORP
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