Buffer input signal
Buffer object buffers an input signal.
The number of samples per channel in the input must equal the difference
between the output buffer size and buffer overlap (i.e.,
To buffer an input signal:
Define and set up your buffer System object™. See Construction.
step to buffer the input according to the
dsp.Buffer. The behavior of
specific to each object in the toolbox.
Starting in R2016b, instead of using the
buff = dsp.Buffer returns
a buffer System object,
buff, used to buffer
input signals with overlap.
buff = dsp.Buffer( returns
a buffer object,
buff, with each specified property
set to the specified value.
buff = dsp.Buffer(LEN,OVRLAP,ICS, returns
a buffer object,
ICS and other specified properties set to
the specified values.
Number of samples to buffer
Specify the number of consecutive samples from each input channel
to buffer. You can set this property to any scalar integer greater
Amount of overlap between outputs
Specify the number of samples by which consecutive output frames
overlap. You can set this property to any scalar integer greater
than or equal to
Specify the value of the object's initial output for cases of
nonzero latency as a scalar, vector, or matrix. The default is
|reset||Reset the internal states of a System object|
|step||Buffer input signal based on past values|
|Common to All System Objects|
Create System object with same property values
Expected number of inputs to a System object
Expected number of outputs of a System object
Check locked states of a System object (logical)
Allow System object property value changes
Note: This example runs only in R2016b or later. If you are using an earlier release, replace each call to the function with the equivalent
step syntax. For example, myObject(x) becomes step(myObject,x).
Create a buffer of 256 samples with 128 sample overlap.
reader = dsp.SignalSource(randn(1024,1),128); buff = dsp.Buffer(256,128); for i = 1:8 y = buff(reader()); end
y is of length 256 with 128 samples from previous input.
This object implements the algorithm, inputs, and outputs described on the Buffer block reference page. The object properties correspond to the block properties, except as noted.