NAK  T-100 Audio Analyzer

  NAK T-100 is a lightweight and all-inclusive audio analyzer for inspecting analog audio devices on computer. It is capable of completing 7+ conventional audio measurements in a single setup without swapping a stack of physical instruments. This makes it an agile tool to quickly check whether a given audio device performs to its specifications. Or during a service/repair/modify project, this is a less overkill and more cost-effective tool for conducting general audio measurements on desk top. Some of the key functions are specifically optimized for tuning analog tape players/recorders.
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The app features modern DSP core with traditional analog skin. It adopts the "Skeuomorphism" design philosophy to offer era-specific operational experience in working with analog audio devices. However, the underlaying engine works purely from digital domain after all, which does not have to follow the analog measurement principes and yield strict identical readings. Typical tolerances across typologies of test instruments should be expected.


Minimum System Requirements
OS  macOS 10.11 (El Capitan) or later
 Windows 10 (build 17763) or later
CPU  >2.4GHz with at least two cores
SoundCard  Must have stereo input and stereo output


Functions and Specifications
 Generator  21 spot sinusoidal plus pink
 Level  -80dB ~ +10dB RMS or Peak
 (extendable to +30dB with physical input attenuator)
 0dB = 1.0V (after calibration)
 20Hz ~ 20kHz
 AC Volt  10mV ~ 300mV, 0.1V ~ 1V
 1V ~ 10V (with physical input attenuator)
 20Hz ~ 20kHz
 Requires calibration with an AC volt-meter as reference
 Distortion  THD+N
 0.01% ~ 0.3%, 0.1% ~ 3%
 400Hz or 1000Hz base frequency
 Speed  3000Hz or 3150Hz, ±3%
 Wow & Flutter  0.01% ~ 0.3%, 0.1% ~ 3%
 Quasi-Peak (2-sigma) DIN 45507
 WRMS (2-second moving window) DIN 45507
 Peak unweighted
 RMS unweighted
 -100dB ~ -10dB, IHF-A weighted
 10 ~ 20kHz (extendable to 26kHz upon sample rate)
 -100dB ~ +10dB
 Gaussian white noise
 Pink noise
 Sweep frequency (asynchronous)
 Lissajous  Ellipse figure with time stabilizer
 Oscilloscope  Two channel, non-quantitative
 Meter Ballistics  RMS: 300mS (capacitive)
 Peak: 10mS raise, 2000mS fall (capacitive)


Please note:
1. This app is by no means a replacement of laboratory grade instrument.
2. This app is intentionally designed in favour of simplicity without excessive configurability.
3. This app operates in two switchable modes: Basic and Scope.
4. The Basic mode is the primary working mode. Its UI panel may be unfamiliar to new users at first. But the same ergonomics has been repeatedly proven in the former practices.
5. The Scope mode is a GUI add-on that displays complex measurement results in 2-dimensional plots. It is a lite graphic console without a set of pro implications.
6. The specifications may vary depending on actual sound card used.
7. Calibration will be needed prior to working with a specific audio device on a specific computer.
8. The computer must have stereo audio input (line-in) and stereo audio output (regardless of built-in or external) in order to allow the app functioning properly.
9. Relatively faster computer with less busy multi-tasking workload is recommended.

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Frequently Asked Questions (FAQ) Contact:

See also:
DDi Codec (for Dolby-B/C)
DxII Codec (for dbx-II/Disc)
DxI Codec (for dbx-I/Disc)


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