by Anwida Soft

Download Graphic Equalizer Pro 2.1 (Windows9x/Me/NT/2000/XP (310Kb)
Download Graphic Equalizer Pro 1.5 (Windows 9x only) (254Kb)

[Editor: Please see A Quick Guide To Headphone Accessories for information about setting up an equalizer for headphone listening.]

Graphic Equalizer Pro is a professional real-time graphic equalizer for Windows 9x/Me/NT/2000/XP. It will add up to 12 dB of boost or cut at any of 15 bands centered around the International Standards Organization (ISO) 2/3 octave frequencies from 20Hz to 20kHz. This two channel system offers completely independent channel control.

The perspective used in designing Graphic Equalizer Pro was to obtain the warmth off a classical analog equalizer with the clarity and the accuracy of the digital domain processing. This was achieved adopting the best analog equipment’s topology.

Main features:

• Stereo 15 bands (standard ISO 2/3 octave), constant Q graphic equalizer
• Real-time processing of every input (CD, line-in, mic, synth...) from the audio board
• Real-time and off-line processing of .WAV files
• Effective real time (really low latency time)
• 64-bit processing procedures
• Built-in limiter
• Exact filters response agreement with specified control parameters

General system requirements:

• Pentium processor
• 16 bit sound card (full duplex 16 bit sound card to take full advantage of the "live input" feature)
• Video board with at least 800 x 600 resolution and 256 colors (recommended >=65536 colors).

A Turtle Beach Pinnacle sound card produces very satisfying results (see below); however, many other good sound cards on the market (even low cost ones) will work equally well with Graphic Equalizer Pro.

K6 233Mhz RAM 16MB, 32MB, 64MB
Hard Disk EIDE 3.2Gb
Turtle Beach Pinnacle


Live Input Processing (turbo mode ON)
LATENCY= 60ms
BUFFERS= 3


Wave File Processing
LATENCY= 15ms
BUFFERS= 3

When choosing a sound card, the main characteristics to check are:

• Real 16 bit full duplex capability. Many Sound Blaster cards don't support real 16-bit full duplex. Often they acquire the incoming signal with 16 bit accuracy and then use a low quality 8 bit format for the output. This obviously implies a sound degradation.

• Low latency time. Latency time is the minimal time necessary to get the effect of a parameter change. Thus it is desirable to get it as short as possible. This characteristic is never (to my experience) declared by the hardware manufacturer but it's of main relevance to obtain low input-output delay. The only way to know it is to test the sound card with GraEq and see the minimum latency time achievable.

• Digital I/O capability (SPDIF I/O). This is important to achieve the best processing results, since with an SPDIF input, no degradation of the incoming signal happens.

• Number and quality of the AD and DA converters.

Registration pricing: $40 US

Download Graphic Equalizer Pro 2.1 (310Kb)
Download Graphic Equalizer Pro 1.5 (310Kb)

Addendum

3/22/2002: Added Equalizer Pro 2.1, which has support for Windows 9x/Me/NT/2000/XP.

From Anwida Soft.
c. 1999, Andrea Forlani and Massimiliano Tonelli .
Questions or comments? Visit the HeadWize Discussion Forums.