Operating System

Windows 10

Board

MSP-EXP432E401Y

Firmware

examples/device/audio_test - master branch (commit 6bba410)

What happened ?

I was tweaking the audio_test example to play back a raw PCM audio file and noticed that the sound seemed noisy. I went back and tried playing the audio from the unmodified audio_test example and it sounded noisy as well. I'm running this test on Windows so I wasn't able to get plot_audio_samples.py working but I am using Audacity to record and play back the audio. Looking at the sound wave you can clearly see some unexpected noise.

I'm curious if anyone else seen this issue on other devices or if this is purely a MSP432E or Mentor IP software implementation issue.

How to reproduce ?

Run audio_test on MSP-EXP432E401Y launchpad. Use Audacity to record the sound coming from the microphone instance.

Debug Log as txt file (LOG/CFG_TUSB_DEBUG=2)

msp432e_audio_test_debug_log.txt

Screenshots

Images of the wave form.

I have checked existing issues, dicussion and documentation

• I confirm I have checked existing issues, dicussion and documentation.