Change Sample Rate Audio
显示 更早的评论
Here's Matlab Audioread I try:
filename = "test.wav";
[y,fs] = audioread(filename);
%Play the audio.
sound(y,fs);
info = audioinfo("test.wav")
And here is the info from that audio:
CompressionMethod: 'Uncompressed'
NumChannels: 2
SampleRate: 44100
TotalSamples: 487424
Duration: 11.0527
Title: []
Comment: []
Artist: []
BitsPerSample: 16
My question is, How do I play the audio at a sample rate of 8000?
采纳的回答
Star Strider
2022-11-14
0 个投票
filename = "test.wav";
[y,fs] = audioread(filename);
L = size(y,1);
t = linspace(0, L-1, L)/fs; % Time Vector
fs_new = 8000;
[yr,tr] = resample(y, t(:), fs_new); % Resample To New Sampling Frequency
There are several compatible resample syntaxes that will do what you want. I prefer the one I posted here.
Alternatively, the interp1 funciton can be uesd, however resample includes an anti-aliasing filter, so it is best for any sort of signal processing.
.
6 个评论
Ibnu Darajat
2022-11-14
Star Strider
2022-11-14
Try this instead:
sound(yr,fs_new)
That should work correctly.
Use ‘tr’ to plot it:
figure
plot(tr, yr)
grid
xlabel('Time (s)')
ylabel('Amplitude')
.
Ibnu Darajat
2022-11-14
there is 2 color when I plot the signal? What's the different?
Star Strider
2022-11-14
It is not necessary to plot it. I simply wanted to show how to use the ‘tr’ vector correctly. (There should be some differences between the original and resampled vectors because of the interpolation being used.)
To listen to the resampled version, do this —
sound(yr,fs_new)
.
Ibnu Darajat
2022-11-14
Star Strider
2022-11-14
As always, my pleasure!
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Measurements and Spatial Audio 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
