Optical compressors may contain tubes and transformers, or they may be solid-state and even transformerless. The LA-3A, an opto compressor with the tone of an 1176. The emphasis control was designed to provide radio stations with better control over the broadcast signal’s high-frequency content. This screw exists on the original hardware units (sometimes on the rear panel) and was factory set and perhaps adjusted by a studio tech to suit the studio’s preferences. Most digital models of the LA-2A and LA-3A provide an emphasis control (sometimes labeled pre-emphasis) that often looks like a slotted screw. Remember that the frequency-dependent nature of the opto blurs these parameters a bit-in a musically helpful way.

The LA-2A provides two modes: compress (3:1) and limit (100:1).

The fixed attack is fast, while the fixed release happens in two stages as described above, and would be generally characterized as slow. The user-adjustable parameters of an opto compressor are output gain and gain reduction (threshold). The compressor then adds make-up gain with a tube amplifier (LA-2A) or a solid-state amplifier (LA-3A). In effect, the audio signal lights a small light panel and a nearby photoresistor senses the light and controls the behavior of the gain reduction. The magic of the LA-2A, and every other optical compressor that followed lies in an optical circuit that acts as the level control, or attenuator. Universal Audio manufacturers an extremely popular hardware reissue of the original LA-2A to this day. By the mid-1960s the LA-1 developed into the current LA-2A compressor design- which has become a staple both as recording hardware and DAW-based software. Optical compressors date back to the 1950s when Telektronix (which eventually became part of Universal Audio) debuted the LA-1 compressor. The Trade Desk stores the data anonymously.The LA-2A hardware reissue from Universal Audio. No personal data is transmitted to The Trade Desk in this process. You can find more details on this in our privacy policy. The information obtained through cookies allows us to compile ad performance statistics and serve retargeting ads on The Trade Desks advertising network. By using The Trade Desk tracking, both The Trade Desk and we are able to track which ads users interact with and which pages they are redirected to after clicking on an ad. No personal data is transmitted from our side to Facebook. The information obtained through cookies allows us to compile statistics on ad performance. Facebook Ads conversion tracking allows Facebook and us to track which ads users interact with and which pages they are redirected to after clicking on an ad. In this way, consumers give each other guidance and give us the opportunity to continuously improve. Customers can also leave a comment to report on their shopping experience. With the customer reviews of Trusted Shops it is possible to award stars for delivery, condition of the goods and customer service. This cookie stores user-like settings for the chat system provider, which are required for our online chat service. These discounts are usually communicated through newsletters, which are created and managed by us with the tool 'Emarsys'. Emarsysįor a more convenient implementation of discounts, we occasionally use cookies which guarantee the discount through a so-called affiliate program through the link of origin. Microsoft stores the information anonymously.

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