Audacity Manual

https://manual.audacityteam.org/man/
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Official user manual for Audacity, a free and open-source digital audio editor and recording...
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### AUD-GET-INFO example with "tracks"

Source: https://manual.audacityteam.org/man/nyquist_macros.html

Example call to AUD-GET-INFO with the "tracks" parameter. Returns a list of track information.

```lisp
  (aud-get-info "tracks")

```

--------------------------------

### Invalid AUD-DO example with ignored parameter

Source: https://manual.audacityteam.org/man/nyquist_macros.html

Invalid AUD-DO example that ignores the invalid "start" parameter, making it difficult to find the error.

```lisp
 (aud-do "Chirp: start=100")

```

--------------------------------

### at

Source: https://manual.audacityteam.org/man/programming_in_nyquist.html

Starts the given sound at a particular time in seconds.

```APIDOC
## (at t (cue sound))

### Description
Starts the given sound at a particular time in seconds. This cannot be used to add silence at the beginning or end, but it can be used when combining two or more sounds.

### Method
Function call

### Endpoint
(at t (cue sound))

### Parameters
- **t** (number) - Required - Time in seconds.
- **sound** (sound) - Required - The sound to start, wrapped in cue.

### Response
Returns the sound with the specified start time.
```

--------------------------------

### Interactive program startup notice

Source: https://manual.audacityteam.org/man/license.html

Suggested notice for interactive programs to display at startup, conveying the program name, copyright, and pointers to warranty and redistribution details. The commands `show w' and `show c' are hypothetical and should be replaced with whatever commands or menu items your program uses.

```text
   Gnomovision version 69, Copyright (C) 20yy name of author
   Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
   This is free software, and you are welcome to redistribute it
   under certain conditions; type `show c' for details.

```

--------------------------------

### Invalid AUD-DO-COMMAND example with debug output

Source: https://manual.audacityteam.org/man/nyquist_macros.html

Invalid AUD-DO-COMMAND example that returns helpful debug information, including the invalid key and valid keys for Chirp.

```lisp
 (aud-do-command "Chirp" :start 100)

```

```lisp
 ;;Debug output:
 Invalid key in "Chirp" :START
 Valid keys for Chirp are:
    StartFreq (double) 
    EndFreq (double) 
    StartAmp (double) 
    EndAmp (double) 
    Waveform [Sine Square Sawtooth Square, no alias]
    Interpolation [Linear Logarithmic]
 Too many arguments: "Chirp" :START

```
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