This book presents a number of studies which focus on the [voice] grammar of Japanese, paying particular attention to historical background, dialectal diversity, phonetic experiment, and phonological analysis. Both voicing processes in consonants (such as Sequential Voicing, or Rendaku) and vowels (such as vowel devoicing) are examined. A number of new analyses are presented, focusing on well-known data that have been controversial in phonological debate in the past, but also presenting new (or rediscovered) data, partly through the work of Japanese scholars that hitherto went mostly unnoticed, partly through new database research, and partly through phonetic experiment.