mirror of
https://github.com/alsa-project/alsa-utils
synced 2024-11-14 05:55:41 +01:00
0cfe406618
Alsabat reports error when noise above threshold be detected.
Use either of the options below to designate the threshold. (e.g.
if the ratio of noise to signal is 5%, the snr is about 26dB.)
--snr-db <value in dB>
--snr-pc <value in %>
The noise detection is performed in time domain. On each period
of the sine wave being analyzed, alsabat substracts a clean sine
wave from the source, calculates the RMS value of the residual,
and compares the result with the threshold. At last, alsabat
returns the number of periods with noise above threshold. 0 is
returned when the source is clean.
Signed-off-by: Lu, Han <han.lu@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
118 lines
3.2 KiB
Bash
Executable file
118 lines
3.2 KiB
Bash
Executable file
#!/bin/bash
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# default devices
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dev_playback="default"
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dev_capture="default"
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bin="alsabat"
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commands="$bin -P $dev_playback -C $dev_capture"
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file_sin_mono="default_mono.wav"
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file_sin_dual="default_dual.wav"
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logdir="tmp"
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# frequency range of signal
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maxfreq=16547
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minfreq=17
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# features passes vs. features all
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feature_pass=0
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feature_cnt=0
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init_counter () {
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feature_pass=0
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feature_all=0
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}
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evaluate_result () {
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feature_cnt=$((feature_cnt+1))
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if [ $1 -eq 0 ]; then
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feature_pass=$((feature_pass+1))
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echo "pass"
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else
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echo "fail"
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fi
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}
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print_result () {
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echo "[$feature_pass/$feature_cnt] features passes."
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}
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feature_test () {
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echo "============================================"
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echo "$feature_cnt: ALSA $2"
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echo "-------------------------------------------"
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echo "$commands $1 --log=$logdir/$feature_cnt.log"
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$commands $1 --log=$logdir/$feature_cnt.log
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evaluate_result $?
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echo "$commands $1" >> $logdir/$((feature_cnt-1)).log
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}
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# test items
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feature_list_test () {
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init_counter
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commands="$bin"
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feature_test "-c1 --saveplay $file_sin_mono" \
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"generate mono wav file with default params"
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feature_test "-c2 --saveplay $file_sin_dual" \
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"generate dual wav file with default params"
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sleep 5
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feature_test "-P $dev_playback" "single line mode, playback"
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feature_test "-C $dev_capture --standalone" "single line mode, capture"
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commands="$bin -P $dev_playback -C $dev_capture"
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feature_test "--file $file_sin_mono" "play mono wav file and detect"
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feature_test "--file $file_sin_dual" "play dual wav file and detect"
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feature_test "-c1" "configurable channel number: 1"
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feature_test "-c2 -F $minfreq:$maxfreq" "configurable channel number: 2"
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feature_test "-r44100" "configurable sample rate: 44100"
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feature_test "-r48000" "configurable sample rate: 48000"
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feature_test "-n10000" "configurable duration: in samples"
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feature_test "-n2.5s" "configurable duration: in seconds"
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feature_test "-f U8" "configurable data format: U8"
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feature_test "-f S16_LE" "configurable data format: S16_LE"
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feature_test "-f S24_3LE" "configurable data format: S24_3LE"
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feature_test "-f S32_LE" "configurable data format: S32_LE"
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feature_test "-f cd" "configurable data format: cd"
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feature_test "-f dat" "configurable data format: dat"
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feature_test "-F $maxfreq --standalone" \
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"standalone mode: play and capture"
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latestfile=`ls -t1 /tmp/bat.wav.* | head -n 1`
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feature_test "--local -F $maxfreq --file $latestfile" \
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"local mode: analyze local file"
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feature_test "--roundtriplatency" \
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"round trip latency test"
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feature_test "--snr-db 26" \
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"noise detect threshold in SNR(dB)"
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feature_test "--snr-pc 5" \
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"noise detect threshold in noise percentage(%)"
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print_result
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}
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echo "*******************************************"
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echo " BAT Test "
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echo "-------------------------------------------"
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# get device
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echo "usage:"
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echo " $0 <sound card>"
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echo " $0 <device-playback> <device-capture>"
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if [ $# -eq 2 ]; then
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dev_playback=$1
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dev_capture=$2
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elif [ $# -eq 1 ]; then
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dev_playback=$1
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dev_capture=$1
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fi
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echo "current setting:"
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echo " $0 $dev_playback $dev_capture"
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# run
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mkdir -p $logdir
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feature_list_test
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echo "*******************************************"
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