This preface contains general information t hat will be useful to know before using the dsPIC ® DSC G.726A Speech Encoding/Decoding Library, also referred to as the G.726A library. Items discussed in this chapter include: • Document Layout • Conventions Used in this Guide • Recommended Reading • The Microchip Web Site • Development Systems Customer Change Notification Service • Customer Support • Document Revision History dsPIC DSC G.726A Speech Encoding/Decoding Library User’s Guide 2011 Microchip Technology Inc. DS70665A Note the following details of the code protection feature on Microchip devices: Microchip products meet the specification contained in their particular Microchip Data Sheet. Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating sp……