Key Input, Key Filter, Bias Control, Output Level, Power

8051 5.1 Compressor

User Guide

Key Input

A Key Input is provided to allow adjustable control from an external source. Like the sidechains the key input has a threshold level control ranging from -20 to +16 to set the intended level at which compression control is required.

It can be used in several ways:

Injecting tone to provide a remotely variable base-level of compression on one or both sidechains.

'Ducking' from an audio source such as dialogue.

		4	0
KEY I/P		8	4
SIDE	A
CHAIN	12		8
SEL	B
	B
	16		12
IN/OUT		-20	+16
	100Hz	THRESHOLD dBu
		THRESHOLD dBu

A		8051
0	A / B	DISCRETE
		DISCRETE
	BIAS	MULTI-CHANNEL
B		MULTI-CHANNEL
		COMPRESSOR
		OUTPUT LEVEL dB
POWER

-5.50

When connected in parallel with one of the inputs, it allows that input to be routed onto both sidechains with different compression thresholds.

Key Filter

The key input is provided with a selectable 12dB/octave high-pass LFE filter, fixed at 100Hz.

Bias Control

The bias control is used to balance the control voltages from the two sidechains by applying up to 6dB of cut and boost, effectively modifying their ratios.

If only a single sidechain is in use, for example when used as a stereo compressor, the bias control allows ratio values between the standard settings to be selected with continuously variable control.

Output Level

This control provides a variable active pad across all six outputs, from 0dB to -5.5dB in 0.25dB steps. The pad is outside of the relay bypass loop and so always controls all six channels together in order to maximise the unit's output level without clipping.

Power

The power switch is illuminated dim red when the mains is present to indicate that the unit is in standby mode. While in standby all switches are disabled, switch settings are retained and the unit consumes minimal power.

Pressing the power switch brings the unit out of standby (power switch illuminates green). Pressing and holding returns it to standby mode.

The unit can be brought out of standby remotely by connecting pins 1 and 12 on the rear panel D-Type connector.

Issue 2

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8051 specifications

The AMS 8051 is a sophisticated microcontroller that has become a favorite among developers and engineers due to its robust performance and versatile applications. Known for its compatibility with the widely used 8051 architecture, the AMS 8051 integrates various features and technologies that enhance its effectiveness in embedded systems.

One of the main features of the AMS 8051 is its 8-bit microcontroller design, which allows it to process data efficiently while maintaining a balance of performance and power consumption. The device typically includes 4KB to 64KB of on-chip ROM and up to 4KB of RAM, providing ample memory for program storage and variable data. Furthermore, the AMS 8051 features a flexible clock speed, usually ranging from 12 MHz to 40 MHz, which allows it to adapt to different operational requirements.

Another notable characteristic of the AMS 8051 is its rich set of input/output ports. It usually includes at least four parallel I/O ports and supports serial communication via UART protocols. This feature makes it highly suitable for interfacing with a wide range of peripherals, such as sensors and actuators, which is essential for developing integrated systems in industries like automotive, telecommunications, and consumer electronics.

The AMS 8051 microcontroller also shines in terms of power management. It typically incorporates various power-saving modes, allowing it to operate efficiently in battery-powered applications. These modes help to extend battery life by minimizing power consumption during idle periods.

In terms of technology, the AMS 8051 is often equipped with advanced interrupt handling capabilities. This feature enables the microcontroller to respond swiftly to external events, making it particularly useful in real-time applications where timely responses are crucial. Additionally, the device supports a range of programming languages, including assembly and C, providing flexibility for developers in their coding preferences.

With its extensive feature set, innovative technologies, and characteristics tailored for modern applications, the AMS 8051 microcontroller stands out in the crowded field of embedded systems. Its combination of performance, reliability, and versatility makes it a preferred choice for many engineering projects, ensuring that it remains relevant in an ever-evolving technological landscape. Whether for hobbyists or industrial applications, the AMS 8051 continues to prove itself as a capable and efficient solution for embedded control.