Asterisk Yandex TTS

yandex_tts_dialplan.conf

[yasay]
; Configuration variables
exten => s,1,Set(SPEAKER=jane)
    same => n,Set(EMOTION=neutral)
    same => n,Set(API_KEY=useyourown)
    same => n,Set(CACHE_DIR=/tmp)

; Generate MD5 hash of the text
    same => n,Set(MD5_HASH=${MD5("${ARG1}")})
    same => n,Set(FILE_PATH=${CACHE_DIR}/${MD5_HASH})

; Check if cached file exists
    same => n,ExecIf($[${STAT(f,${FILE_PATH}.sln)} = 0]?GoTo(generate,1))
    same => n,Playback(${FILE_PATH})
    same => n,Return

; Generate new audio if not cached
exten => generate,1,Set(URL=https://tts.voicetech.yandex.net/generate?lang=ru-RU&speaker=${SPEAKER}&emotion=${EMOTION}&key=${API_KEY}&text=${URIENCODE(${ARG1})})

; Download MP3
    same => n,System(curl '${URL}' -o ${FILE_PATH}.ogg)

; Convert to required format
    same => n,System(ffmpeg -i ${FILE_PATH}.ogg -ar 8000 -ac 1 -acodec pcm_s16le -f s16le ${FILE_PATH}.sln)

; Play the generated audio
    same => n,Playback(${FILE_PATH})
    same => n,Return

[example]
exten => s,1,Answer()
same => n,GoSub(yasay,${EXTEN},1("Бдыжь"))