The sounds that we hear, coming out of speakers, derive mostly from analog signals, which processing is associated with the problems of attenuation, noise, and deterioration. These issues are addressed when the original sound passes through an analog-to-digital converter (ADC) after which the resulting data can be distributed on CDs or via networks as digital sound. Following, these data are processed using a digital-to-analog converter (DAC) in the end user’s digital audio device and output as analog sound.
In the digitization of analog signals, sampling is carried out at a certain frequency. To reproduce sound with the highest fidelity possible, higher sampling frequencies and bit rates are required. Today’s high-resolution audio sources are characterized by sampling frequencies and bit rates superior to those used for CDs, enabling digitalization for true high-fidelity audio reproduction.
Accurate low-noise clock sources are necessary
In digital audio devices, the phase noise of the clock influences the digital signal due to jitter, thereby impeding high-fidelity audio reproduction. To enhance sound reproducibility, a crystal oscillator with superior phase noise characteristics (i.e., low jitter) is necessary. At Pink Faun we manufacture our own OCXO clocks. They are designed with superior phase noise characteristics to ensure optimal sound reproducibility.
Phase noise is expressed as frequency component levels measured outside a crystal oscillator’s original frequency and is based on the component level of the original frequency. Offset frequency is the departure from the initial frequency and is normally measured in the range of 1 Hz – 1 MHz.
Frequency stability (the characteristic by which frequency does not change over an extended period) is generally seen as an important property of crystal oscillators. However, audio devices require short-term rather than long-term stability. Against such a background, XO’s which have a frequency stability of about ±30 – ±100 ppm, are commonly used for master clocks. High-end audio systems require an OCXO with excellent short-term stability close to the carrier for higher quality sound.
Our dedicated, meticulous production of high-fidelity audio systems enables us to diminish noise to the maximum extent, thus improving music quality dramatically and shifting the boundaries of musical experience.
Pink Faun OCXO clock for I2S bridge
Pink Faun OCXO clock for SPDIF bridge
Pink Faun OCXO clock for USB bridge
Pink Faun OCXO clock custom