5
What Is WiDIF-HP?
es
ver
ver
er
Cable
Cable
n
ogy
el
lso
nal
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 multi-
channel operation.
What Is WiDIF-HP?
High Sound Quality Wireless Transmission
Simultaneous Multi-Channel Operation
Encrypted Transmission Provides Security
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.
Because WiDIF-HP is highly resistant to interference, about 50 percent more channels can be operated simultaneously, compared to
analog systems.
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
Intermodulation free special channel allocation is necessary.
Analog Wireless System
Digital Wireless System (WiDIF-HP)
Digital Wireless System (WiDIF-HP)
Equally spaced easy channel allocation is available.
** 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.
FM-modulated
audio signal
The risk of being intercepted by
a receiver of an outside system.
Encrypted data
Digitally modulated
coded audio
WiDIF-HP Specifications
Sampling frequency
48 kHz
Quantization 24
bit
Frequency response
20 Hz – 22 kHz
Dynamic range
106 dB typ. (A-weighted)
THD
0.03% or better
Occupied bandwidth
192 kHz or less
Modulation principle
π/4 Shift QPSK
Audio latency
3.4 milliseconds **
Digital Wireless Outline