snapshot~ Reference

Convert signal values to numbers

snapshot~

Description

Use the snapshot~ object to convert a signal value into a float message when a bang is received or according to a specified interval. The interval can be set to a fixed or tempo-relative rate using the Max time format syntax.

Examples

See a sample of a signal at a given moment

Discussion

The snapshot~ object is sample-accurate when Scheduler in Audio Interrupt is enabled. More details here.

Arguments

reporting-interval [list]

Optional
Unitstime-value

Set the reporting interval in ms or using the Max time format syntax. If the interval is 0 snapshot~ will only output data when it receives a bang message.

Attributes

active [int]

When active is enabled, snapshot~ outputs sample values at a rate specified by the interval attribute.

interval [10 atoms]

Reporting interval

offset [int]

The index of the sample within a signal vector that will be reported. The index is constrained between 0 and the current signal vector size minus one.

Common Box Attributes

annotation [symbol]

Sets the text that will be displayed in the Clue window when the user moves the mouse over the object.

background [int] (default: 0)

Adds or removes the object from the patcher's background layer. background 1 adds the object to the background layer, background 0 removes it. Objects in the background layer are shown behind all objects in the default foreground layer.

color [4 floats]

Sets the color for the object box outline.

fontface [int]

Sets the type style used by the object. The options are:

plain
bold
italic
bold italic Possible values:

0 = 'regular'
1 = 'bold'
2 = 'italic'
3 = 'bold italic'

fontname [symbol]

Sets the object's font.

fontsize [float]

Sets the object's font size (in points). Possible values:

'8'
'9'
'10'
'11'
'12'
'13'
'14'
'16'
'18'
'20'
'24'
'30'
'36'
'48'
'64'
'72'

hidden [int] (default: 0)

Toggles whether an object is hidden when the patcher is locked.

hint [symbol]

Sets the text that will be displayed in as a pop-up hint when the user moves the mouse over the object in a locked patcher.

ignoreclick [int] (default: 0)

Toggles whether an object ignores mouse clicks in a locked patcher.

jspainterfile [symbol]

JS Painter File

patching_rect [4 floats] (default: 0. 0. 100. 0.)

Sets the position and size of the object in the patcher window.

position [2 floats]

g/s(set)

Sets the object's x and y position in both patching and presentation modes (if the object belongs to its patcher's presentation), leaving its size unchanged.

presentation [int] (default: 0)

Sets whether an object belongs to the patcher's presentation.

presentation_rect [4 floats] (default: 0. 0. 0. 0.)

Sets the x and y position and width and height of the object in the patcher's presentation, leaving its patching position unchanged.

rect [4 floats]

g/s(set)

Sets the x and y position and width and height of the object in both patching and presentation modes (if the object belongs to its patcher's presentation).

size [2 floats]

g/s(set)

Sets the object's width and height in both patching and presentation modes (if the object belongs to its patcher's presentation), leaving its position unchanged.

textcolor [4 floats]

Sets the color for the object's text in RGBA format.

textjustification [int]

Sets the justification for the object's text. Possible values:

0 = 'left'
1 = 'center'
2 = 'right'

varname [symbol]

Sets the patcher's scripting name, which can be used to address the object by name in pattr, scripting messages to thispatcher, and the js object.

Messages

bang

Reports the sample value in the most recently received signal vector at the offset specified by the offset attribute. If offset is 0 and the bang message is received at the high priority thread when Scheduler in Audio Interrupt is enabled, snapshot~ will report the value at the sample offset of the current scheduler time.

int

Arguments

internal-clock-enable-flag [int]
In left inlet: Any non-zero value turns on interval-based reporting, 0 turns it off. Reporting is on by default if a non-zero interval was specified.
In right inlet: Set the reporting interval in ms. If the interval is 0, automatic reporting stops.

float

Arguments

internal-clock-enable-flag [float]
In left inlet: Any non-zero value turns on interval-based reporting, 0 turns it off. Reporting is on by default if a non-zero interval was specified.
In right inlet: Set the reporting interval in ms. If the interval is 0, automatic reporting stops.

list

Arguments

ITM-time-list [list]
Set interval in Max time format.

anything

Arguments

ITM-time-list [list]
Set interval in Max time format.

sampleinterval

Arguments

internal-clock-interval [int]
Set interval in samples per sampleinterval

signal

Connect a signal to sample

start

Start periodic reporting

stop

Stop periodic reporting

Output

float

When snapshot~ receives a bang or periodic reporting is enabled, sample values from the input signal are sent out its outlet.
mc.snapshot~ outputs voice followed by the channel number of a connected multi-channel signal its right outlet, followed by sample value for that channel out its left outlet.

See Also

Name Description
capture~ Store a signal to view as text
number~ Signal monitor and constant generator
sig~ Convert numbers into audio signals
MSP Analysis Tutorial 1: Signals and Meters MSP Analysis Tutorial 1: Signals and Meters