---
title: "Parameters"
url: "https://help.maxon.net/c4d/en-us/Content/html/GVSOUND-ID_GVPORTS.html"
section_path: "XPresso > XPresso Nodes > General > Sound operator > Parameters"
element_id: "GVSOUND"
group_id: "ID_GVPORTS"
description: "Pass a Boole value of 1 to this port to trigger sound playback."
---

## Parameters

The following input ports are available:

### Play

Parameter ID: `GV_SOUND_PLAY`

Pass a Boole value of **1** to this port to trigger sound playback.

### Time

Parameter ID: `GV_SOUND_TIME`

Usually, you will want the sound to be played back at its original speed. However, if you want to play the sound at a faster or slower rate, connect your own time to this port.

### Sample

Parameter ID: `GV_SOUND_SAMPLE` · Range: [-2147483648..2147483647]

A sample is the smallest unit that a sound file can have. The number of sound samples per second can vary greatly depending on the compression and quality of the sound file. This port gives you access to every sample.

### Band

Parameter ID: `GV_SOUND_FFT_BIN` · Range: [-2147483648..2147483647]

See Frequency Bands below. Enter the values 0, 1, 2, etc. in order to access the corresponding menus.

![Image: 004687.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/004687.jpg)

In the example above, a sound sample loaded into the **Attribute Manager** will be played each time the objects collide.

The following output ports are available:

### Left

Parameter ID: `GV_SOUND_OUTPUT_LEFT` · Range: [-2147483648..2147483647]

The left channel's current volume (the amplitude of the samples for the left sound channel).

### Right

Parameter ID: `GV_SOUND_OUTPUT_RIGHT` · Range: [-2147483648..2147483647]

The right channel's current volume (the amplitude of the samples for the right sound channel).

### Length

Parameter ID: `GV_SOUND_LENGTH`

The length of the sound file in seconds. If you want the number of samples instead, use the Sample port.

### Samples

Parameter ID: `GV_SOUND_SAMPLES` · Range: [-2147483648..2147483647]

The total number of samples in the sound file.

### Bands

Parameter ID: `GV_SOUND_FFT_RES`

The frequency spectrum of a loaded sound file will be broken down among the **Bands** added and output accordingly. The more **Bands** that are added, the more precise the sound will be output - and the longer it will take to calculate. For each individual **Band**, the following applies: If the sound file has a bandwidth of, for example, 44100 Hz (CD-quality), it will be halved internally and split up amongst the **Bands** that were added. If, for example, 512 **Bands** are added, each frequency band will have a bandwidth of 43 Hz.

Select the desired amplitude here.