itech ACORD 6.4.1: The Integrated Suite for Professional Audio Measurement
itech ACORD 6.4.1 is a comprehensive software package for professional audio and acoustic measurements. It is designed for audio engineers, speaker designers, and acousticians who need to perform precise electroacoustic testing of components (like loudspeakers and microphones) as well as analyze room acoustics. The software works in conjunction with high-quality external audio interfaces and measurement microphones to turn a standard PC into a powerful acoustic analysis workstation.
Core Function: Precision Measurement of Sound & Audio Devices
The software’s primary function is to generate test signals, capture the acoustic or electrical response through an audio interface, and then analyze that response to calculate a wide array of industry-standard audio metrics. It covers both the source (the audio device) and the environment (the room).
Key Measurement Modules & Capabilities:
1. Electroacoustic Device Testing
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Loudspeaker & Driver Characterization: Measures key parameters such as frequency response, impulse response, Thiele-Small parameters (for drivers), harmonic distortion, and sensitivity.
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Microphone & Amplifier Testing: Characterizes microphone frequency response and polar patterns, and measures amplifier power output and distortion.
2. Room Acoustics & Sound System Analysis
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Room Acoustics Measurement: Calculates standard room acoustic parameters like Reverberation Time (RT60), Early Decay Time (EDT), Clarity (C50, C80), and Speech Transmission Index (STI) using impulse response measurements.
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Sound System Tuning: Can be used for aligning and equalizing sound reinforcement systems by measuring transfer functions.
3. Advanced Analysis & Signal Processing
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Dual-Channel FFT Analysis: Performs high-resolution frequency domain analysis using Fast Fourier Transform (FFT) for transfer function, coherence, and phase measurements.
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Real-Time Analyzers: Includes real-time 1/1-octave and 1/3-octave band analyzers for sound level monitoring and spectrum analysis.
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Data Logging & Reporting: Records time-history data and generates detailed graphs and reports for documentation and analysis.
