audioread

Gets audio data and the sampling rate from an audio file using functions defined in the Audio library.

Syntax

[m, r] = audioread(filename)

[m, r] = audioread(filename, type)

[m, r] = audioread(filename, range)

[m, r] = audioread(filename, range, type)

Inputs

filename: Audio file name. Currently, only .wav format files are supported.; Type: string
type: Optional data type which the output m will contain. Valid values are 'double' (default value) are 'native'.; Type: string
range: Optional two-element positive integral vector specifying the start and end frames that the output m will contain.; Type: vector

Outputs

m: Two dimensional real matrix containing the audio data.; Type: matrix
r: Sample rate or the samples(blocks) per second.; Type: integer

Examples

Get audio file data and the sample rate:


[m, r] = audioread('audio1.wav');
sz = size(m);
printf('Size of audio data is [%d x %d], sample rate is %d\n', sz(1), sz(2), r)

Size of audio data is [268237 x 2], sample rate is 8000

Get audio file data with native data type for a defined range of samples:


m = audioread('audio1.wav', [1 5], 'native')

m = [Matrix] 4 x 2
-241    3
-285  -29
-109   44
-50    12