Audio Analysis Zero Crossing

Zero crossing rate calculation. This rate corresponds to the number of times that the sound value (waveform) passes through the zero.

Typically, the more the sound is harmonically complex, the more the zero crossing rate value is high.

You can use it to make differences between vowels or consonants sounds, or the difference between snare, bass or cymbals on drums.

In the example below, we can see on the panel-oscilloscope-data module the result of the zero crossing rate analysis on a simple drum loop.

  • 1: Kick
  • 2: Snare
  • 3: cymbal

Settings

in

Audio input flow(s).

threshold

Detection threshold. The calculation is done only if the input sound intensity is greater than the threshold value.

average time

Average time. The calculation is done during a time interval.

Use small values for quick variations or high for slow variations.

zero rate

Zero crossing rate output in Hz.

max value

Calculated zero crossing rate maximum value.

As in the example above, it's often more interesting to get the relative variations rather than the absolute. You can use the division math module to achieve this.

silence

Silence indicator. Sends a 1 value when the audio input intensity is under the detection threshold and a 0 when above.

reset max

Resets to 0 the calculated Max Zero Crossing value.

Common Settings

info

show manual

Opens the web browser to display information or help about the selected object, if it exists.

For more details about information/help creation, see create-help-file.

description

Description of the module for internal help purposes only. The description is not displayed in the interface.

ID's

visible only in god mode, see setup-panel-tab-expert.

unique ID

Current private ID for this control used to identify the object.

preset ID

Current private preset ID for this control used for presets.

recreate ID

If you experience difficulties in Polyphonic mode, try to recreate new id(s) with this button.

repair ID s

Each Patch shared on the local network uses its own ID (identification number). If you experience issues of Patches that don't send information to the good target, this button will rebuild all these id's.

Object Remote Address

absolute

Absolute remote address. see objects-address.

local

Local to the current patch remote address. see objects-address.

user addr

User defined remote address. see objects-address.

See also

version 7.0.250121

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