Sony DWTB01/E3040 Product Information Document (Digirtal Wireless System Integ - Page 5

Digital Wireless Outline What Is WiDIF-HP? WiDIF-HP (WiDIF: Wireless Digital Interface Format, HP: High Profile) is a wireless digital audio interface format developed by Sony. It enables highly secure transmission with high sound quality and low system latency, and supports simultaneous multichannel operation. High Sound Quality Wireless Transmission WiDIF-HP uses 24 bit/48 kHz sampling, resulting in superb sound that surpasses CD quality. Dynamic range of more than 106 dB, wide frequency response of 20 Hz to 22 kHz, and a low system latency of 3.4 ms** ensure excellent performance. Additionally, there is no compander, resulting in faster response than is possible with conventional analog wireless systems.* *Unless otherwise specified, this refers to analog wireless systems that include a compander. WiDIF-HP Specifications Sampling frequency Quantization Frequency response Dynamic range THD Occupied bandwidth Modulation principle Audio latency 48 kHz 24 bit 20 Hz - 22 kHz 106 dB typ. (A-weighted) 0.03% or better 192 kHz or less π/4 Shift QPSK 3.4 milliseconds ** ** When DWM-01, DWT-B01, and DWR-R01D are used in combination. When analog output is combined with the DWR-S01D, the latency rating is 3.6 milliseconds. Simultaneous Multi-Channel Operation Because WiDIF-HP is highly resistant to interference, about 50 percent more channels can be operated simultaneously, compared to analog systems. Analog Wireless System Intermodulation free special channel allocation is necessary. Digital Wireless System (WiDIF-HP) Equally spaced easy channel allocation is available. Encrypted Transmission Provides Security Security is an important requirement for wireless systems handling the transmission of audio signals. In an analog wireless transmission system, the transmitted audio signal is at risk of being intercepted by a receiver of an outside system. When using FM modulation, audio signals can be received by anyone with the right equipment and some technical knowledge. By contrast, the digital audio wireless transmission system transmits encrypted audio data, which mitigates the risk of such interception and provides highly secure transmission for even the most critical applications. Analog Wireless System Digital Wireless System (WiDIF-HP) FM-modulated audio signal The risk of being intercepted by a receiver of an outside system. Digitally modulated coded audio Encrypted data What Is WiDIF-HP? 5