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Edited 2026.05.21 [12:53]
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Circuit of Microphone Preamplifier
Circuit of Microphone Preamplifier || An example circuit of microphone preamplifier / *Note: Resistors R2 - R12 are mounted directly to the 12 position rotary switch, SW1. There is no connection to switch position 1. ...
/ The Music Telegraph
'Phase Invert' in Audio Engineering
Phse invert, often labeled polarity invert or simply ∅ on audio equipment, is a fundamental yet frequently misunderstood function in audio engineering. At its core, phase invert reverses the polarit ...
The Music Telegraph
| 2026.01.09 14:54
The Role of Bias Frequency in Analog Tape Machines
In analog tape recording, bias frequency is a high-frequency signal added to the audio during the recording process to ensure accurate, low-distortion sound reproduction. Although listeners never hear ...
The Music Telegraph
| 2025.12.12 15:56
Understanding Parallel Signal Patching
Parallel signal patching, also known as parallel routing, is a fundamental audio enginerring technique that allows an engineer or producer to process an audio signal while keeping the original, unalte ...
The Music Telegraph
| 2025.10.10 16:20
Minimizing Insertion Loss in Audio Systems
The term "insertion loss" refers specifically to the drop in signal level that occurs when a device is inserted, or patched, into a signal path. This is not a defect or failure, but rather a ...
The Music Telegraph
| 2025.08.08 12:47
The Stereo Flange Effect
The stereo flange effect produces a pleasant "swirling" sound that can effectively thicken and add warmth to the sound of an instrument. It is produced by varying the amount of delay time be ...
The Music Telegraph
| 2025.05.09 14:23
Beyond the VU Meter: The Shift to Peak Monitoring in Audio Recording
In the past, recording engineers relied heavily on the VU (Volume Unit) meter to gauge audio levels passing through their analog consoles and onto analog tape. For the most part, this method seemed to ...
The Music Telegraph
| 2025.03.17 16:45
Expander Techniques: Eliminating Noise and Refining Sound
An expander can serve both as a problem-solving tool—reducing ambient background noise and improving isolation—or as a creative effect, shaping the ADSR envelope of a sound. In this article, you'l ...
The Music Telegraph
| 2025.02.17 14:42
Limitations of Analog Tape Recorders' Dynamic Range
The analog tape recorder (a.k.a. analog tape machine) cannot respond to the full 120 dB of dynamic range that our ears can. Therefore it can never really fool the ear into thinking the recording is re ...
The Music Telegraph
| 2024.10.14 14:05
Maintaining A Clean Signal When Using EQ
Life in professional audio involves processing audio signal with things like equalizers, effects programs, dynamic level controllers, etc. When you use these devices they can end up adding more level ...
The Music Telegraph
| 2024.07.03 16:10
Characteristics of Analog Equalizer
In operation, an equalizer should affect only the desired frequencies and no others in theory. It should be able to process the unaffected signals without altering their characteristics. In reality, h ...
The Music Telegraph
| 2024.02.26 11:17
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