Script to generate audio output from Google Text-to-Speech API

GCPmakeSpeech.sh

#!/bin/bash
# GCPmakeSpeech.sh
# run in Google Cloud Shell in the Cloud Console
# adapted from https://cloud.google.com/text-to-speech/docs/create-audio-text-command-line

# Check if text argument is provided
if [ -z "$1" ]; then
  echo "Usage: $0 \"TEXT_TO_SYNTHESIZE\" [OUTPUT_FILE.mp3]"
  exit 1
fi

TEXT_TO_SYNTHESIZE="$1"
OUTPUT_FILE="${2:-synthspeech.mp3}" # Default output file is output.mp3

# Escape double quotes within the input text for JSON
#ESCAPED_TEXT=$(echo "$TEXT_TO_SYNTHESIZE" | sed 's/"/\\"/g')

# Construct the JSON payload with the provided text
JSON_PAYLOAD=$(printf '{
  "input": {
    "text": "%s"
  },
  "voice": {
    "languageCode": "en-gb",
    "name": "en-GB-Standard-A",
    "ssmlGender": "FEMALE"
  },
  "audioConfig": {
    "audioEncoding": "MP3"
  }
}' "$TEXT_TO_SYNTHESIZE")

# Google Cloud Text-to-Speech API endpoint
TTS_ENDPOINT="https://texttospeech.googleapis.com/v1/text:synthesize"

# Construct the curl command
curl -s -X POST \
  -H "Authorization: Bearer $(gcloud auth print-access-token)" \
  -H "Content-Type: application/json; charset=utf-8" \
  -H "X-Goog-User-Project: $(gcloud config list --format='value(core.project)')" \
  -d "$JSON_PAYLOAD" \
  "${TTS_ENDPOINT}" > response.json

#		 curl -X POST \
#     -H "Authorization: Bearer $(gcloud auth print-access-token)" \
#     -H "x-goog-user-project: $GOOGLE_CLOUD_PROJECT" \
#     -H "Content-Type: application/json; charset=utf-8" \
#     -d "$JSON_PAYLOAD" \
#     "https://texttospeech.googleapis.com/v1/text:synthesize" | jq -r '.audioContent' | base64 -d > tts.mp3

# Check if the request was successful
if jq -e '.audioContent' response.json > /dev/null; then
  # Extract the audio content from the JSON response
  AUDIO_CONTENT=$(jq -r '.audioContent' response.json)

  # Decode the base64 audio content and save it to the output file
  echo "$AUDIO_CONTENT" | base64 -d > "$OUTPUT_FILE"
  echo "Audio content saved to: $OUTPUT_FILE"
else
  echo "Error synthesizing text:"
  cat response.json
fi

# Clean up the temporary response file
rm response.json