TAS5707: How to set TAS5707 that 2 loudspeakers can have same sound source

Cris Qi

Part Number: TAS5707
Other Parts Discussed in Thread: TAS5711, TAS5731M, TLV320ADC3101

Dear All，

project：loudspeaker box

The box need take reference signal horn to do echo cancellation. Our hardware only collected data of a trumpet.Speakers (R). This may be caused by LL speakers, the data can't catch.

Early is hardware compatibility caused these problems.So if there is a way can be realized, two speakers sound source is consistent, whether 5707 can be configured to it?

Doc1.docx

over 6 years ago

0 Jeff Kohnle over 6 years ago

TI__Expert 6985 points

Hello Cris! Your question is hard to understand? Are you a mandarin language speaker? If so, please feel free to post your question in Mandarin and then Shawn can read it and reply. Thanks, Jeff

0 Cris Qi over 6 years ago in reply to Jeff Kohnle

Intellectual 835 points

Hi Shawn，
智能音箱项目中，两个喇叭通过桥式接法接，目前是一个喇叭出左声道，一个喇叭出右声道；因为需要取喇叭参考信号做回声消除，硬件上只采集了一个喇叭的数据（R声道喇叭）；这样可能就造成L声道喇叭数据抓不到。
前期是硬件兼容原因引起这些问题。
是否可以让两个喇叭出来的声源是一致的，
单独喇叭左右声道都可以输出呢？TAS5707是否可以配置成这样？

0 Shawn Zheng over 6 years ago in reply to Cris Qi

TI__Mastermind 24835 points

Hi Cris,
Please let me describe your question again. TAS5707 is used in BTL mode, and you want to output R channel data in I2S input source on both channels/speakers, right?
Unfortunately, TAS5707 is a very old device and has very limited resource in the process flow, so this feature is not supported. Please consider TAS5711 or TAS5731M, which support this application. (R+L)/2 data can be outputed on both L and R channel/speaker. Please find more info in another E2E post. e2e.ti.com/.../632335
Best regards,
Shawn Zheng

0 Cris Qi over 6 years ago in reply to Shawn Zheng

Intellectual 835 points

Hi Shawn，
thanks for your support very much，Can they replacedirectly, The drive is compatible? tlv320adc3101 +tas5707

And TAS5707 can support “ PARALLEL BRIDGE TIED LOAD ”？

0 Shawn Zheng over 6 years ago in reply to Cris Qi

TI__Mastermind 24835 points

Hi Cris,

TAS5707 supports PBTL mode but not signle fitler PBTL mode, so you have to parallel the output after the LC filters.

The pin definition on TAS5711/TAS5731M is very similar with TAS5707. So it's possible to substitute with the newer devices. Please pay attention to Pin8 and Pin14, they have the different usage.

Best regards,

Shawn Zheng

0 Shawn Zheng over 6 years ago in reply to Shawn Zheng

TI__Mastermind 24835 points

Hi Cirs,

Do you have any other question on this? Could you please help to close this question if it's answered?

Best regards,

Shawn Zheng

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TAS5707: How to set TAS5707 that 2 loudspeakers can have same sound source