Ringtone Creation

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We use the best and newest restoration tools to remove noise and artefacts that ringtone might contain, whatever their origin.

Some common noise sources include:

* Tape Recordings * Guitar Amps * Microphones * Chains of poorly-constructed analog equipment * Spurious room noises
50/60Hz humming (and its harmonics) caused by power supplies, guitars/amps, or just bad cable connections will be removed.

One major cause of humming derives from the fact that audio wiring is very susceptible to "ground loops." This can occur, for example, when two pieces of audio equipment are plugged into different power outlets that have a difference in their respective "ground potentials." The result is that if a signal flows from one piece to the other via an unbalanced connection, this potential difference causes a spurious current, in turn creating an audible "hum" at the AC frequency (50 or 60 Hz) and its harmonics (100/120 Hz, 200/240 Hz, etc). We test every ring tone.
Ensuring proper equalization is a critical part of the mastering ringtone process. In our efforts to ensure ringtone's music performs and sounds as well as possible across a broad range of systems, we find and apply the correct spectral balance to ring tone mix. This is accomplished via extensive listening and audiophile-quality equalization.

The "goals" of equalization vary widely, and depend on unique characteristics of each individual ring tone. For example, although many tracks require a "bass lift," just as often we master ringtones that requires bass reduction. Other times, "equalization surgery" is required -- for example, to remove certain disruptive resonances.

All ringtone's processing is done at 64bit Floating Point, 176kHz and is transferred over the best D/A A/D converters.

Some may wonder, "What is floating point?" Simply, it refers to a way of digitally representing, real numbers (typically as a "mantissa" multiplied by a base 2 "exponent"). In the IEEE 754 floating point standard, 64-bit floating point numbers consist of one sign bit (e.g. + or -), 11 exponent bits, and 52 bits for the mantissa.

As for "sampling rate," the technical definition is that it "defines the number of samples per second taken from a continuous (e.g. analog) signal to make a discrete (e.g. digital) signal." All other things being equal, as the sampling rate increases, the digital 'approximation' of the analog signal improves. This is one reason music from a CD (44,1kHz) would normally sound better than music over a telephone (8kHz), even if the same audio equipment was used to listen to the audio. We provide processing every Ringtone with the best quality.
A method of compressing or altering Digital Data that attempts to preserve the original nature of it by approximating details. In Digital Audio dithering might be applied to a recording to attempt to achieve a better sound quality by simulating audio waves without raising the size of the data.

We applying the best dithering for our ringtones.

Because we must convert your project down to 16-bit or 24-bit, we apply what is termed "dithering" at the end of the mastering process. The need for dithering arises because, at low signal levels, there is still a measurable amount of distortion caused by the quantization error becoming correlated to the ringtone's signal level.

To eliminate this problem, we add random noise to the least significant part of each digital word. This cancels the correlation between the signal level and the quantization error, allowing the digital system to encode amplitudes that are smaller than the least significant part. Although admittedly a technical process, the result certainly isn't -- dither is absolutely required for good digital audio recording and processing.

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