Investigating state-dependent transfer systems, signal memory, hysteretic behavior, energy redistribution, and temporal cohesion in complex audio signals.
Most audio processing systems are described using saturation, compression, harmonics and analog coloration.
Acamposoft investigates whether some signal behaviors may be better explained as state-dependent signal evolution rather than static transfer functions alone.
Current evidence suggests that persistence, envelope extension, continuity formation, and energy redistribution may emerge from evolving internal system state.
The goal is not to recreate vintage hardware, but to understand the mechanisms responsible for continuity, cohesion and musical flow.
Research Observations
Current Findings
#1 - State Persists Beyond Individual Events
A mathematically generated test signal was used to compare the untreated path against CALMAG under identical conditions: 10 kHz tone → 50 Hz excitation → 10 kHz tone.
In the dry path, the second 10 kHz section returned to perfect measured identity with the first. Through CALMAG, the second 10 kHz section remained measurably different after the 50 Hz excitation.
The difference decayed rapidly over the first several hundred milliseconds, then stabilized slightly below perfect identity. This suggests fast state recovery followed by a subtly shifted operating condition rather than an immediate reset.
#2 - Continuity Emerges Between Objects
Temporal Consequence of Persistent State
Across short, medium, and long transient material, CALMAG produced measurable envelope extension while preserving transient timing and onset position.
The observed behavior was not characterized by delayed attacks or the transient attenuation commonly associated with conventional compression.
Instead, the measurements indicate that signal activity persists for longer durations following excitation, increasing continuity between events while retaining transient definition.
#3 - Spectral Energy Redistribution
Spectral Consequence of Persistent State
Relative to the dry reference, CALMAG redistributed spectral energy away from the lowest bass region and toward the low-mid, midrange, presence, and air frequency bands.
This redistribution occurred without detectable transient delay and without the transient attenuation typically associated with multiband compression.
The resulting distribution is consistent with a state-dependent process that alters spectral balance over time rather than a fixed linear frequency response.
Listening Example
The listening examples below use the same 60-second musical section used for the spectral redistribution measurement.
Source Material: Take A Daytrip – “Manzana” (Logic Pro Demo Project) Bars 65–105
The Dry and CALMAG versions were rendered from identical source material and LUFS matched prior to comparison. The CALMAG example uses the research configuration that produced the measurements shown above.
Dry Reference
CALMAG Research Configuration
Research Configuration
Gain 0.0 dB Bias -1.0 HF -0.414 dB Out 0.0 dB Head 0.5 Hyst 0.0 Mix 100% Auto Level On
No additional processing was applied after rendering, aside from LUFS loudness matching for comparison.
Why The Name?
CALMAG
CALMAG stands for Calibrated Magnetic Processor.
The name reflects a research interest in systems whose behavior depends
on operating state rather than remaining fixed under all conditions.
Historically, magnetic recording systems derived much of their character
from calibration, biasing, operating level, and alignment. Engineers did
not simply record through tape machines; they calibrated them into specific
operating conditions that produced different musical behaviors.
This research investigates whether similar state-dependent signal-evolution
principles may contribute to continuity formation, energy redistribution,
temporal cohesion, and other behaviors observed in complex systems.
CALMAG is not presented as a tape emulation. The project uses magnetic
recording as a historical reference point for studying how operating state
influences the behavior of a signal-processing system.
Private Beta
Join CALMAG Beta
CALMAG is currently in a private research beta for experienced producers, engineers, musicians, and critical listeners.
Use this form to request access or share interest in testing future Acamposoft builds.
Submissions are sent to Acamposoft for private beta review. The first submission may require email confirmation from the form service.
