New Digital Wireless from dB Technologies
Do you know the difference between an audio cassette and an audio CD?
Good, then we have actually already clarified the essentials.
Analogue wireless systems need a so called compander system for the transmission of low interference audio signals, similar to the Dolby function for analogue audio cassettes. The audio signal is compressed in a transmitter and expanded again in the receiver. In addition, for technical reasons, the signal from the transmitter must be limited at maximum amplitude of the radio wave, in order to avoid over- modulation of the receiver.
The effect on the audio signal resulting from this is negligible in most applications. This technical process for example might only be perceived unconsciously by a singer.With complex acoustic audio signals however these factors are certainly audible and are noticeable to a musician.
This is why we have dedicated our first revolutionary digital wireless system to the guitarist. A guitar signal, either acoustic or electric, is extremely complex especially where the dynamics are concerned. From a hard strike on the strings up to the complete fade away of a note, the range required for the dynamics is very wide.
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Call us on 01444 258258 for pricing!
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Specifications:
Digital 2400 G Digital Guitar System:
• Digital wireless system in the 2.4 GHz range
• Dynamic range: more than 144 dB A-weighted
• Signal to noise ratio: more than 144 dB
• Digital code squelch
• Diversity UHF Screen antenna
• Squelch function for each channel
• Volume regulator on the front panel for each channel
• Balanced XLR output per channel
Unlimited Dynamics.
It may be difficult to understand at first, but with our digital wireless system it is not an audio signal in the conventional sense, which is being transmitted, but data. In the transmitter the signal is converted into a digital data stream using an extremely high grade 20 bit A-D converter. With this, the present rules for wireless audio transmission are broken. Limitations on dynamics or frequency response practically no longer exist. On the receiver side the digital data package is converted back into a conventional audio signal by a 20 bit D-A converter and made available at the balanced audio output.
Unlimited Attack.
Now you will perhaps say "Hey, my CD player can also convert digital into analogue, my mobile-phone can make digital wireless transmissions, why have you only just come up with this?"
The problem is the conversion of the signals between analogue and digital. These are computing processes. These computing processes take time, a few milliseconds. When you are listening to a CD, it doesn't matter if you hear the signal with a 20 millisecond delay because there is no reference to the original.
If however you are playing the guitar, for example, and the signal is played back with a delay, this will lead to a loss of timing. Guitar playing will become virtually impossible. Even minimal delays of only a few milliseconds will be noticed by a guitarist and will lead to subconscious uneasiness when playing.
Innovative Technology.
In lengthy intensive development work with more than 20 highly specialised developers, dB Technologies have succeeded in eliminating this delay by using the latest technology. There is absolutely no delay detectable in the signal with wireless transmission.
Absolutely no noise.
For comparison purposes let us go back to the beginning. Precisely like the difference between the audio cassette and the CD, digital transmission offers the absolute minimum of unwanted interference such as noise.
Every analogue wireless system has background noise to a certain extent. Here too this can once again be ignored for most applications. For an electric guitar however a multiple, extremely high amplification of the signal is made at the input stage of the amplifier in order to achieve a distorted sound. With this amplification however, it is not only the guitar signal that is amplified but also all other incoming noises including the basic noises of a wireless system.
Digital wireless signal transmission offers previously unobtainable audio quality with virtually noise-free transmission.
Digital wireless transmission also offers hitherto unknown cable-free audio quality for the transmission from electric bass guitars. With bass signals the basic noises of an analogue wireless system are much more clearly noticable, as there are hardly any high frequencies contained in the bass signal itself. A blanket of noise overlays the signal and is clearly perceived as interference noise.
Extended Range
Also previously unknown in wireless technology is the virtually unlimited frequency response of digital signal transmission. In the lower frequency range, particularly analogue wireless systems, for technical reasons, are severely limited and will only transmit from 70 Hz upwards which limits transmission of electric bass guitar with considerable impairment to the sound. Digital wireless transmission allows a frequency range from 20 Hz to 20 KHz.
Ultra High Frequency
The Digital 2400 works in the upper UHF range to 2.4 GHz. Due to the extremely short wavelengths a new type of antenna equipment is used, called the UHF screen antenna. This hi-tech antenna is also largely responsible for the futuristic laptop design of the receiver.
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