PRODUCT DATA Binaural Recording Headphones Type 4965 Uses • Record binaural sound or two channels of audio for NVH development applications, such as confirming prototype/ design performance changes • Benchmark vehicles for reference or processing into simple PULSE™ NVH Simulator models • Capture vehicle behaviour during on-road evaluation or while using DTS On-Road Simulator • General purpose two-channel data recorder with replay • Cabin noise measurements Features • Easy to use and compact design • Record two channels of sound • CCLD analog inputs • Multi-country power supply • Calibrator adaptor for Binaural Microphone Fig. 1 Binaural Recording Headphones Type 4965 The headphones are optimal in combination with Sonoscout. The measured sound data can be played back to the headphones via Bluetooth®, which in the Sonoscout application makes the user device completely wire-independent from the measurement solution. The headphones are also the ideal solution for obtaining data for use with PULSE™ NVH Vehicle Simulator Type 3644. Simultaneously record audio and vehicle performance data with Sonoscout and export NVH Vehicle Simulator models for processing. TEDS The headphones incorporate TEDS (Transducer Electronic Data Sheet) microphones. This means that the actual identity and loaded sensitivity of the left and right microphones is Description programmed into the TEDS memory, to make setup very easy. Binaural Recording Headphones Type 4965 are designed to work with Brüel & Kjær’s Sonoscout™ NVH Recorder, but they work as well with any CCLD conditioning. The headphones are focused on NVH testing, and are used for applications where a person’s perception of sound is important to understand. As the headphones are positioned next to the test person’s ears, they give the driver/passenger a perfect impression of the vehicle experience. Transport Case Fig. 2 Contents of Type 4965’s transport case The entire Binaural Recording Headphone kit is contained in a rugged transport case, see Fig. 2, and the main components are compact enough to be carried in a coat pocket. The kit contains an adaptor that allows the microphones to be calibrated with Sound Calibrator Type 4231. Specifications – Binaural Recording Headphones Type 4965 MICROPHONES Cable Length: 3 m (10 ft) from capsule to THD, Total Harmonic Distortion: Less than Cartridge Type: Prepolarized, gold-plated connector 0.2% at 1 KHz condenser element with vertical diaphragm Weight: <10g (down to cable clip) TRANSPORT CASE Microphone Size: 12.7 mm (0.5) length, Operating Temperature Range: –40°C to (including system components) 5.4 mm (0.21) capsule diameter 45°C (–40°F to 113°F) Dimensions: 253 207 70 mm (9.96 8.15 Frequency Range: 20 Hz – 8 kHz, ±2 dB re Relative Humidity (RH): Up to 90% 2.76) 1 kHz, 3 dB soft boost at 8 – 20 kHz when Microphone Weight: <20 gram Weight: 640 g measured in free-field for individual HEADPHONES microphones at 0° incidence ENVIRONMENTAL Sennheiser® MM-100 Sensitivity: Nominally 20 mV/Pa ±3 dB at Temperature Range: Weight: 54 g 1kHz Operating: 10°C to 40°C (50°F to 108°F) Technology: Bluetooth Version 2.0 + EDR Equivalent Noise Level, A-weighted: Storage Temperature: Supported Profiles: A2DP + AVRCP + HSP + Typically 23 dB(A) re 20mPa –20°C to 70°C (–4°F to 158°F) HFP Maximum Sound Pressure Level: 134 dB Listening Time: 7.5 h SPL before damage Compliance with EMC Directive and Charging Time: 2.5 h Total Harmonic Distortion: <3% at 114 dB Low Voltage Directive of the EU Standby Time: < 220 h SPL (sine) Compliance with the EMC Range: 10 m Preamplifier Output Impedance: 30 – 40 requirements of Australia and New Colour: Titan Cable Drive Capability: Up to 3 m (10 ft) Zealand Frequency Response (Headphones): 22 – 20.000 Hz Ordering Information Type 4965 Binaural Recording OPTIONAL ACCESSORIES Headphones Type 4231 Sound Calibrator Includes the following hardware: CALIBRATION SERVICE • KE-4335: Transport Case 4965-CFF Factory Standard Calibration • HT-0025: Sennheiser Headphones with TEDS update • DP-0978: Calibrator Adaptor for Binaural Microphones • ZG-0473: Multi-country power supply for BP 2475 – 12 2014-01 headphones •2 WA-1705: UNF10-32 SMB adaptor •2 JP-0145: UNF10-32 BNC adaptor TRADEMARKS Bluetooth is a registered trademark of Bluetooth SIG, Inc. · Sennheiser is a registered trademark of Sennheiser Electronic GMBH & Co. KG Brüel & Kjær reserves the right to change specifications and accessories without notice. © Brüel & Kjær. All rights reserved. ËBP-2475---RÎ HEADQUARTERS: Brüel & Kjær Sound & Vibration Measurement A/S · DK-2850 Nærum · Denmark Telephone: +45 7741 2000 · Fax: +45 4580 1405 · www.bksv.com · [email protected] Local representatives and service organisations worldwide.