Android sample rate 16khz on some devices

[JOSE FELIX HERNANDEZ BARRIO]

Hi,

I've created an android webrtc application using last webrtc native compiled manually. (libjingle_perconnection)

On most devices if a record the audio i have good sound quality

Spectrum analysis

But in the huawei P7 or P8 i have worse sound quality and frequencies up to 8khz. I've tested with spectral audio app, that the huawei built-in micro can capture upto 22khz.

Is there any way i can forze the sample rate to be 48khz ? it seems to downgrade to 16khz.

From the app log:

05-31 22:33:32.521: I/libjingle(19969): (neteq_impl.cc:114): NetEq config: sample_rate_hz=16000, enable_audio_classifier=false, enable_post_decode_vad=true, max_packets_in_buffer=50, background_noise_mode=2, playout_mode=0, enable_fast_accelerate=false, enable_muted_state= true

Regards

[Henrik Andreasson]

Please file an issue here: https://bugs.chromium.org/p/webrtc/issues/list and include the exact device model names.

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[JOSE FELIX HERNANDEZ BARRIO]

changing in webrtc/modules/audio_coding/neteq/include/neteq.h

the line

struct Config {

    Config()

        : sample_rate_hz(16000),

to

struct Config {

    Config()

        : sample_rate_hz(48000),

seems that everything is working now as expected.

i'll file the issue tomorrow with the full description