• PPM: High Resolution Digital Peak Meter
• Spectrum Analyzer (FFT, real time)
• Correlation Meter
• Stereo Meter (Phase Scope = Gonio Meter)

More specifications:

• works with every standard sound card with 16bit and above
• each instrument sizable
• select orientation (vertical, horizontal) of PPM and Correlation Meter
• save and restore up to 8 meter sets
• user selectable thread priority
• user selectable audio device
• user selectable sample rate (44100Hz/48000Hz)

What makes this product different?

• compared to regular PC based spectrum analyzers for measurement purposes we optimized this program for ergonomic usage and true real time audio monitoring (music can be pretty fast).
• invented and coded by sound engineers
• high resolution, full range frequency resolution
• 1/12 octave scaling of the frequency range
• 1024 values are mapped to 128 bands INCLUDING the very low end AND even DC (note: white noise is displayed FLAT in the spectrum analyzer, pink noise is NOT)
• hard real-time - whatever that means in comparison to soft ... ;) However, we achieved to avoid any sensible latency effect between human ear and eye
• no loss of transients (all short kick drums are represented)
• no averaging (which also slows down attack times), but true ultra fast attack time (one sample), decay adjustable in 3 steps
• accurate: ONE full scale sample (16 bit: +32767 OR -32768) triggers and holds the over-display (numerical peak level readout gets red, holds it until clicked) (in German: "amtlich")
• ergonomic 80 Hz screen update display, no flickering, smooth decay simulation of best analog PPM equipment (so you can watch all day/night long without getting a headache)

The meters in detail:

PPM:

• digital PPM with 96db in following resolution:
• 0.1db between 0db and -20db
• 0.2db between -20 and -40db
• 0.5db between -40 and -60db
• 1.0db between -60 and -70db
• max. dig. res. -70db and -96db
• 3 decay times, bar peak hold, bar peak decay and alphanumeric peak readout

Spectrum Analyzer (FFT):

• digital FFT with 96db in following resolution:
• 0.2db between 0db and -70db
• max. dig. res. -70db and -96db
• 3 decay times, bar peak hold, bar peak decay
• 7 window types for FFT
• input left, right, left + right and left - right
• freeze

Correlation Meter:

• shows the phase correlation between 2 audio channels.
• standard -1 to +1 range.
• scale also in degrees 0 to 180.
• numerical readout for max. in phase and max. out phase.

Stereo Meter (Phase Scope):

• like a real scope, 45% rotated
• shows phase correlation and stereo field width in a X-Y view. Selectable point size (large/small) for better readout on different window sizes and computer displays
• selectable duration of sample visibility (Visible points: 256/512/1024)
• selectable count of drawn samples (any, any second, any fourth), to scale to slow CPU's

System requirements:

• Windows95/98 , NT4.0
• 16bit sound card
• Pentium 133, recommended Pentium II 233
• 16-32bit graphic card

• 30 Days Time out period.
• the program will stop working after 3 minutes, then you have to restart it
• the program will not remember nor restore settings