framebuffer
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## framebuffer

framebuffer — Read audio signals into 1 dimensional k-rate arrays and vice-versa with a specified buffer size.

## Description

Plugin opcode in framebuffer.

framebuffer converts audio signals into a 1 dimensional k-rate array of a specified size. The size of the k-rate array must be larger than ksmps. It also converts 1 dimensional k-rate arrays back into audio signals, the k-rate arrays must be uninitialised and also be larger than ksmps in size. The buffer works as a circular buffer and may be used for doing frame based audio processing such as spectral analysis/synthesis or as a simple delay line.

## Syntax

    kout[] framebuffer ain, isize

    aout framebuffer kin, isize

## Initialization

isize -- The amount of samples that the buffer will contain.

## Performance

kout[] -- The k-rate array output from the framebuffer. ain -- The audio signal input to the framebuffer.

aout -- The audio signal output from the framebuffer. kin -- The k-rate array input to the framebuffer.

## Examples

Here is a simple example of the framebuffer opcode. It uses the file framebuffer.csd.

Example 385. Example of the framebuffer opcode.

See the sections Real-time Audio and Command Line Flags for more information on using command line flags.

    <CsoundSynthesizer>
    <CsOptions>
    -odac
    </CsOptions>
    <CsInstruments>
    nchnls = 2
    0dbfs = 1
    ksmps = 128
    sr = 44100

    instr 1
        isize init 1024
        ioverlaps init 4

        asig diskin2 "fox.wav", 1, 0, 1
        kframe[] framebuffer asig, isize
        kwindowedFrame[] window kframe, isize

        aout olabuffer kwindowedFrame, ioverlaps
        aout = aout / 2

        outs aout, aout
    endin

    </CsInstruments>
    <CsScore>
    i 1 0 400
    </CsScore>
    </CsoundSynthesizer>

## See Also

Array-based spectral opcodes

## Credits

Author: Edward Costello;
NUIM, 2015

New in version 6.06

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