Re: [Discuss-gnuradio] Use microphone as sound source for USRP

[Edwin Li]

Hi Marcus,

I doubted my way is not a good solution. Thanks for your confirmation. I'll just use the audio source.

Regards,

Edwin

Müller, Marcus (CEL) <address@hidden>于2018年7月6日周五 下午3:42写道：

There's no "data rate" on these GPIO pins; you'd have to bitbang them.
Interfacing with a digital microphone won't work, as you can't ask
their binary states quick enough.

Honest recommendation: Use anything else to connect your microphone to
your PC – if you have a microphone for which an audio driver exists,
you can directly use it in GNU Radio via the Audio Source.

Best regards,
Marcus

On Fri, 2018-07-06 at 13:35 -0600, Edwin Li wrote:
> Dear Mailing List Subscribers,
>
> There is an aux IO on the USRP X310 motherboard. I want to connect it
> with a microphone(Assume it outputs 12-bit digital signal that is
> compatible with the IO). I found very little information on how to
> use the IO other than the USRP manual( http://files.ettus.com/manual/
> page_gpio_api.html). There are a few people talking about it on the
> list but their applications are very different from mine.
>
> My question is that is it possible to read values from the IO using
> GNURadio functions? How does GNURadio know the data rate of the IO?
>
> Thanks.
>
> Regards,
> Edwin
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