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[Launchpad Bug Tracker <1923841@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package alsa-utils - 1.2.2-1ubuntu2.1

---------------
alsa-utils (1.2.2-1ubuntu2.1) focal; urgency=medium

  * d/p/0013-aplay-try-to-use-16-bit-format-to-increase-capture-q.patch
    - aplay: try to use 16-bit format to increase capture quality
    (LP: #1923841)

 -- Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx>  Wed, 14 Apr 2021
21:38:30 +0800

** Changed in: alsa-utils (Ubuntu Focal)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1923841

Title:
  [SRU] Increase recording quality

Status in HWE Next:
  New
Status in alsa-utils package in Ubuntu:
  Fix Released
Status in alsa-utils source package in Focal:
  Fix Released

Bug description:
  [Impact]
  Audio gets recorded by "arecord" has really bad sound quality when the volume is low.

  [Fix]
  https://github.com/alsa-project/alsa-utils/pull/69
  Switch the default audio format from 8 bits to 16 bits if hardware supports it.

  [Test]
  1. Plug a microphone.
  2. Run `arecord | aplay` and say something to the microphone.
  3. Only noise can be heard.

  With the fix applied, the recording is clear.

  [Where problems could occur]
  If there's any hardware falsely advertised to support 16 bits, this change will break them.
  However, this is effectively using `arecord -f cd` or `arecord -f cdr`, so that's not likely.

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