| Tool Name | Primary Application | Key Parameters Measured | Notable Features | |-----------|---------------------|------------------------|------------------| | | Dimensional metrology | Circumference and diameter | Dual-scale vernier with 0.1 mm resolution | | Silicon Labs Si4720 | FM radio transceiver electronics | Transmit frequency, reference clock, seek parameters | Single-chip FM Rx/Tx solution | | Siemens 4720 Parameter | Industrial drive systems | Encoder control, speed regulation | Communication parameter block | | Brüel & Kjær Type 4720 | Acoustic engineering | STI, signal-to-noise ratio, IEC 60268-16 compliance | Calibrated speech source for DIRAC software | | CDI BG4720 | Force/torque measurement | Pressure, force, displacement, torque | Digital indicator with peak hold and data logging | | Siemens 4720 Power Meter | Energy/power monitoring | Voltage, current, power, harmonics, K-factor | Smart meter with waveform capture |
At its core, the 4720 parameter tool is an engineering-grade software interface. It communicates with a vehicle's onboard computers via a data link adapter (such as a Nexiq USB-Link or similar RP1210 standard device). Unlike consumer diagnostic tools that only read and clear trouble codes, a parameter tool modifies the actual operational logic of the vehicle.
To get the most out of the 4720 parameter tool, users should follow best practices for configuration, optimization, and maintenance. Some best practices include: 4720 parameter tool
In some SAP modules (e.g., CO, FI, PS), a like 4720 could be:
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. | Tool Name | Primary Application | Key
, often referred to in acoustical engineering circles as part of the "4720 parameter tool" suite—specifically when used alongside DIRAC Room Acoustics Software—is a high-precision, artificial mouth-directional loudspeaker sound source. It is designed by Brüel & Kjær (HBK) to simulate human speech, making it indispensable for evaluating speech intelligibility, room acoustics, and sound reinforcement systems in compliance with international standards.
: Offline and online configuration of digital and programmable controllers. To get the most out of the 4720
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In the world of Artificial Intelligence, we are obsessed with scale. We measure progress in billions. GPT-3 has 175 billion parameters; GPT-4 rumored to have trillions. The prevailing narrative for years has been simple:
For acoustic engineers, the Type 4720 Echo Speech Source by Brüel & Kjær is the definitive calibrated tool for measuring speech intelligibility parameters such as the Speech Transmission Index (STI), modulation transfer function (MTF), and signal‑to‑noise ratio (SNR). It is a compact active loudspeaker (10×10×17 cm, 1 kg) with built‑in stimulus signals: a test voice signal based on a standard male spectrum per IEC 60268‑16, plus intermittent and continuous noise signals for background‑noise characterization. The fully calibrated output ensures that when the speaker is placed 1 m from the receiving microphone, it produces a nominal sound level of 60 dB(A) without external equalization. It integrates with DIRAC 6 room acoustics software (Type 7841), which automatically compensates for background noise by using known sound pressure levels.