Recording and Voice Processing, Volume 1. Jean-Michel Reveillac

few people can claim to have heard a particular performer with his or her live voice. Voices are optimized for recording and broadcasting; they must remain intelligible and are sometimes enriched, or even placed in a virtual environment, but our ears have become accustomed.

      Figure I.1. Vocal differences in the same sentence. 3D spectrogram of a male voice, on the left, and a female voice, on the right

       (source: www.projectrhea.org). For a color version of this figure, see www.iste.co.uk/reveillac/recording.zip

      It is in part the facts I have just mentioned that led me to write this book, to which I would add the pleasure of bringing, to one or more performers, the possibility of discovering and hearing themselves on a medium such as a CD, DVD, streaming platform, podcast, etc.

      I will not forget the listeners nor the public for whom we all work in fine: artists, commentators, singers, sound engineers, technicians, etc.

      This work, as its title suggests, is above all devoted to the recording and processing of the voice. I have tried to aggregate a set of elements that contribute and intertwine in this same field, taking care of the ins and outs.

      I remain convinced that in order to understand the techniques and handle certain hardware or software, it is useful to know what surrounds them. Throughout the book, I have often specified the historical context without forgetting the personages to whom we owe these wonderful inventions. They made it possible for us to listen to the voice, whether spoken, whispered, sung or shouted. At the beginning of the 21st century, and for more than 120 years already, this seems so common, so futile, so banal, but what would our ancestors from the past centuries think of it?

      Volume 1 of this book, more oriented towards theory and generalities, will begin with a short history of the recording of the spoken and sung voice from the first machines until today, which will be followed by an outline of the mechanisms and specificities that characterize the human voice.

      With these elements, we will approach microphones, an essential and necessary tool for voice capture, to then understand the recording environment, whose influence creates the conditions for a good recording.

      Figure I.2. A wire recorder, the Webster Chicago 180-1 (1949). For a color version of this figure, see www.iste.co.uk/reveillac/recording.zip

Figure I.3. The famous Neumann U67 tube microphone and its power supply. For a color version of this figure, see www.iste.co.uk/reveillac/recording.zip

      Volume 2, oriented towards studio work, will describe the hardware and software tools that are useful for efficient processing during recording and will include them in the audio chain that will support them. Different examples of configurations will be presented, from the most modest to the most advanced.

      After this first approach, we will be ready to carry out the sound recording, not without taking some precautions with regard to the performer and their immediate environment. We will place the various essential materials while respecting the rules necessary for a correct recording.

      Later, we will discuss the constraints of recording a group of performers, a choir and a voice-over.

      Once the sound recording has been done, it is time for processing and mixing by implementing various hardware or software processes that will ensure a correct sound rendering, while respecting the style and coloration you want to apply.

Figure I.4. The famous EMI Abbey Road studio 2 control room with its REDD.37 console (1958–1964)

      Finally, additional effects or corrections can be made to finalize your project.

      I hope that the eight chapters that make up these two volumes will provide you with a broader and more precise knowledge of vocal recording, a key area of our daily ultra-mediatized world that seems trivial, but whose mastery is not trivial.