dbx Pro 376 Appendix C, High-FrequencyInformation Completely Lost, Low-FrequencyContent, Time

Appendix C Appendix 376

Amplitude

High-Frequency Information Completely Lost

High-Frequency Content

A/D Clip Level

Low-Frequency Content

Time

A/D Clip Level

High-Frequency Information Completely Lost

Figure 3c - Disproportionate Loss of High-Frequency Information Due to Clipping

Amplitude

0 dB FS	A/D Clip Level
-4	} TYPE IV™ Over Region
	Time
-4	} TYPE IV™ Over Region
0 dB FS	A/D Clip Level

Figure 3d - Type IV Mapping Preserves High-Frequency Information

Now you’re probably wondering, “What’s the catch? I can’t get something for nothing so what did I give up?” You may be worried that your A/D noise floor got 4 dB worse because we borrowed the top 4 dB of your converter. This is certainly a valid concern. Fortunately, we have the answer! Without going into the confidential technical details, by using our proprietary analog and digital Type IV™ processing, we reclaim the original A/D noise level! So what you get is free headroom!

The benefits of the dbx Type IV™ Conversion System can easily be heard by switching it in and out while listening to signals with high-level peaks captured in the Type IV™ Over Region. You will notice an obvious audible difference. With Type IV™ bypassed, you can’t help notice the harsh, edgy sound of the A/D converter clipping. With Type IV™ enabled, those nasty artifacts disappear revealing a more open and natural sound. With Type IV™ enabled, you will get a more accurate and pure representation of the original wide-dynamic-range signal. You will absolutely agree that we really do give you “something for nothing.” We give you peace of mind knowing that you never have to worry about clipping your A/D again! And when you listen to the noise floor of your A/D, you’ll realize that we never compromise your noise performance with Type IV™!

The dbx Type IV™ Conversion System succeeds in combining the best of the analog and digital worlds to capture the truest essence and fullest dynamic range of audio signals. Who else but dbx would bring you this technology!

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