Data AcQuisition And Real-Time AnalysisScope - Spectrum - Spectrogram - Signal Generator
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Revision History - v5.00
Daqarta v5.00.1 - 3 December 2009:
Daqarta v5.00 - 1 December 2009:
Pitch Track options added to Spectrogram dialog (Sgram/PT). Displays real-time pitch of highest Spectrum Peak versus time on a "piano keyboard" background, with peak amplitude encoded as Spectrogram color.
Pitch-to-MIDI option works with Pitch Track to convert real-time voice, whistle, instrument, or other sound to MIDI synthesizer output. Comprehensive controls for up to 8 simultaneous voices plus percussion. May set selected voices to provide background accompaniment for live performance (percussion, rhythm, bass lines, etc, or complete "karaoke" setup). Extensive Changes script language allows dynamic parameter automation. Performances may be recorded to standard MIDI files.
DaqMusiq operation of Pitch-to-MIDI uses a default internal random source, the Daqarta Generator, or an external source to create music from random inputs. Allows unique changing "compositions" in any musical style, or creative modifications of existing songs. Changes scripts allow dynamic control over all parameters. KaleidoSynth mode uses controlled pitch feedback for live performances. Save or load setup files to exchange with others.
Spectrum Limits Dialog allows Pro-license or trial users to apply limit curves to the spectrum data displayed in Y-log (power spectrum) mode, to allow Pass/Fail testing of transducers or other frequency-sensitive devices or circuits. Limit curve Max and Min files may be created via text editor or from a frequency response spectrum via Save Y-log Trace as .CAL, .CRV, or .LIM File in the File menu.
New Frequency Places control in the Frequency Step Mode dialog allows all Generator frequency controls to show 0 to 9 decimal places of resolution. The setting is stored with the .GEN setup, so different setups may use different resolutions. Help topic includes tip for scrolling at finest resolution (about 89 ppm).
Frequency Counter now includes RPM mode, with Cylinder compensation for measurements made from spark or fuel injector timing pulses. Min and Max buttons allow viewing the minimum or maximum Hertz, RPM, or msec values since the last Reset.
The file Open dialog (via Open Existing in the File Menu, or DD / Open on the toolbar) now allows special single-channel text files to be opened as 1024-value static waveforms with high resolution (up to 48 bits). The same Open dialog is used for loading Arb files, where it rounds to integers in the +/-32767 range but supports up to 8192 values.
Generator changes while Input is active (full-duplex mode) now maintain sync alignment, at the cost of a stutter in the output sound. This can be blocked by toggling off the new Sync Restart Generator option in the Edit - Run Preferences dialog.
Update indicator shown at upper right corner of trace on alternating updates to show that trace is "live" even with waveforms or spectra that are constant from trace to trace.
Frequency Counter Update Rate now has Fast and Slow buttons (no Med). Fast is 10 per sec, Slow is 1 per sec but can be changed via new Fcount Slow control in Run Preferences. Counter now displays up to 9 decimal places.
Synthesizer Burst controls now have greatly improved timing accuracy. The note name and frequency are now displayed above the Synth MIDI Note control. Setting Synth MIDI Voice to 128 activates Percussion mode, where MIDI Note selects the General MIDI Percussion Sound.
Macro IF statements now allow hexadecimal test values via h prefixes. For example, IF.VarA=&h80000001 will be true if VarA has either its most-significant or least-significant bit set. Particularly useful for Limits tests, where 4 different Pass/Fail test results are present in a single variable.
Display Magnification settings for all modes now saved at Daqarta exit, restored in next session. For waveform and linear Spectrum modes, SHIFT+Home restores unmagnified full-scale settings at any time. For Spectrum Y-log or Spectrogram modes it restores the full-scale top of the Y-axis if it had been previously shifted via SHIFT+PgUp or SHIFT+PgDn, but does not change the bottom.
New WinVer macro allows Macro IF tests of the major Windows version, to allow macros that adjust to the operating system.
New WaitMsgTitle macro allows setting title of WaitMsg macro messages (with buttons).
Bug Fix: Daqarta now works with 64-bit Windows versions.
Bug Fix: Daqarta failed to find a 16-bit sound card if an 8-bit card (modem, etc) had a lower device number.
Bug Fix: Discovered bug in Windows XP waveInGetPosition and waveOutGetPosition functions that caused values to wrap at 2^27 or 2^28 samples instead of 2^32, causing bad data access after (typically) 46 or 92 minutes. Workaround added.
Bug Fix: Timer macros could cause crash on Win9x systems.
Bug Fix: Spectrum Peak averager mode gave erroneous cursor readout values, although trace displays were OK.
Bug Fix: Spectrogram Color Palette dialog was not updating RGB controls properly.
Bug Fix: Macro scroll operations (using =>1 or =>-1) did not work properly.
Bug Fix: Possible crash if Sample Rate lower than 239 Hz.
Bug Fix: Single Frame Trigger now properly waits for the next trigger event after Arm. (Was updating immediately if a recent prior event had occurred.)
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