oscil1
Prev | Orchestra Opcodes and Operators | Next

## oscil1

oscil1 — Accesses table values by incremental sampling.

## Description

Accesses table values by incremental sampling.

## Syntax

    kres oscil1 idel, kamp, idur [, ifn]

## Initialization

idel -- delay in seconds before oscil1 incremental sampling begins.

idur -- duration in seconds to sample through the oscil1 table just once. A negative value will make the table be read from the end to the beginning.

ifn -- (optional) function table number. tablei, oscil1i require the extended guard point. The number defaults to -1 which indicates a sinewave.

## Performance

kamp -- amplitude factor.

oscil1 accesses values by sampling once through the function table at a rate determined by idur. For the first idel seconds, the point of scan will reside at the first location of the table; it will then begin moving through the table at a constant rate, reaching the end in another idur seconds; from that time on (i.e. after idel + idur seconds) it will remain pointing at the last location. Each value obtained from sampling is then multiplied by an amplitude factor kamp before being written into the result.

## Examples

Here is an example of the oscil1 opcode. It uses the file oscil1.csd.

Example 670. Example of the oscil1 opcode.

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

    <CsoundSynthesizer>
    <CsOptions>
    ; Select audio/midi flags here according to platform
    -odac      ;;;realtime audio out
    ;-iadc    ;;;uncomment -iadc if realtime audio input is needed too
    ; For Non-realtime ouput leave only the line below:
    ; -o oscil1.wav -W ;;; for file output any platform
    </CsOptions>
    <CsInstruments>

    sr = 44100
    ksmps = 32
    nchnls = 2
    0dbfs  = 1

    giPan ftgen 0, 0, 8, -2, .5, .2, .8, .1, .9, 0, 1, .5

    instr     1

    istay = 2 ;how many seconds to stay on the first table value
    asig   vco2 .3, 220
    kpan   oscil1 istay, 1, p3-istay, giPan ;create panning
           printk2 kpan ;print when new value
    aL, aR pan2 asig, kpan ;apply panning
           outs aL, aR

    endin
    </CsInstruments>
    <CsScore>
    i 1  0  10
    e
    </CsScore>
    </CsoundSynthesizer>

The example will produce the following output:

     i1     0.50000
     i1     0.20000
     i1     0.80000
     i1     0.10000
     i1     0.90000
     i1     0.00000
     i1     1.00000
     i1     0.50000

## See Also

table, tablei, table3, oscil1i, osciln

Prev | Up | Next
oscbnk | Home | oscil1i