read
Read next consecutive audio file
Description
Examples
Read Data in Audio Datastore
Specify the file path to the audio samples included with Audio Toolbox™. Create an audio datastore that points to the specified folder.
folder = fullfile(matlabroot,'toolbox','audio','samples'); ADS = audioDatastore(folder);
While the audio datastore has unread files, read consecutive files from the datastore. Use progress
to monitor the fraction of files read.
while hasdata(ADS) data = read(ADS); fprintf('Fraction of files read: %.2f\n',progress(ADS)) end
Fraction of files read: 0.03 Fraction of files read: 0.05 Fraction of files read: 0.08 Fraction of files read: 0.10 Fraction of files read: 0.13 Fraction of files read: 0.15 Fraction of files read: 0.18 Fraction of files read: 0.21 Fraction of files read: 0.23 Fraction of files read: 0.26 Fraction of files read: 0.28 Fraction of files read: 0.31 Fraction of files read: 0.33 Fraction of files read: 0.36 Fraction of files read: 0.38 Fraction of files read: 0.41 Fraction of files read: 0.44 Fraction of files read: 0.46 Fraction of files read: 0.49 Fraction of files read: 0.51 Fraction of files read: 0.54 Fraction of files read: 0.56 Fraction of files read: 0.59 Fraction of files read: 0.62 Fraction of files read: 0.64 Fraction of files read: 0.67 Fraction of files read: 0.69 Fraction of files read: 0.72 Fraction of files read: 0.74 Fraction of files read: 0.77 Fraction of files read: 0.79 Fraction of files read: 0.82 Fraction of files read: 0.85 Fraction of files read: 0.87 Fraction of files read: 0.90 Fraction of files read: 0.92 Fraction of files read: 0.95 Fraction of files read: 0.97 Fraction of files read: 1.00
Return Information About Data
Specify the file path to the audio samples you want to include in the audio datastore. In this example, the samples are located on a local desktop. Create an audio datastore that points to the specified folder.
folder = 'C:\Users\audiouser\Desktop'; ADS = audioDatastore(folder,'LabelSource','foldernames');
When you read data from the datastore, you can additionally return information about the data as a structure. The information structure contains the file name, any labels associated with the file, and the sample rate of the file.
[data,info] = read(ADS); info
info = struct with fields: SampleRate: 44100 FileName: 'C:\Users\audiouser\Desktop\Turbine-16-44p1-mono-22secs.wav' Label: Desktop
Input Arguments
ADS
— Audio datastore
audioDatastore
object
Specify ADS
as an audioDatastore
object.
Output Arguments
data
— Audio data
M-by-N matrix
Audio data, returned as a M-by-N matrix, where:
M –– Total samples per channel in file.
N –– Number of channels in file.
info
— Information about audio data
struct
Information about audio data, returned as a struct with the following fields:
FileName
–– Name of the current file.Label
–– All labels of the file.SampleRate
–– Sample rate of the file.
Version History
Introduced in R2018b
MATLAB コマンド
次の MATLAB コマンドに対応するリンクがクリックされました。
コマンドを MATLAB コマンド ウィンドウに入力して実行してください。Web ブラウザーは MATLAB コマンドをサポートしていません。
Select a Web Site
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
You can also select a web site from the following list:
How to Get Best Site Performance
Select the China site (in Chinese or English) for best site performance. Other MathWorks country sites are not optimized for visits from your location.
Americas
- América Latina (Español)
- Canada (English)
- United States (English)
Europe
- Belgium (English)
- Denmark (English)
- Deutschland (Deutsch)
- España (Español)
- Finland (English)
- France (Français)
- Ireland (English)
- Italia (Italiano)
- Luxembourg (English)
- Netherlands (English)
- Norway (English)
- Österreich (Deutsch)
- Portugal (English)
- Sweden (English)
- Switzerland
- United Kingdom (English)