MP3 over JSON

Fixed Parameters

audioFormat

mp3

required

Variable Parameters

speaker

string

required

Must be one of the voices listed in our documentation.

text

string

required

The text you’d like spoken

modelId

string

Choose mist for hyper-realistic conversational voices or v1 for Rime’s first-gen model (default: v1)

pauseBetweenBrackets

bool

default: "false"

When set to true, adds pauses between words enclosed in angle brackets. The number inside the brackets specifies the pause duration in milliseconds.
Example: “Hi. <200> I’d love to have a conversation with you.” adds a 200ms pause between the first and second sentences.

phonemizeBetweenBrackets

bool

default: "false"

When set to true, you can specify the phonemes for a word enclosed in curly brackets.
Example: “{h’El.o} World” will pronounce “Hello” as expected. More details on this feature are incoming!

inlineSpeedAlpha

string

Comma-separated list of speed values applied to words in square brackets. Values < 1.0 speed up speech, > 1.0 slow it down. Example: For text “This is [slow] and [fast]”, use “3, 0.5” to make “slow” slower and “fast” faster.

samplingRate

int

The value, if provided, must be between 4000 and 44100. Default: 22050

speedAlpha

float

default: "1.0"

Adjusts the speed of speech. Lower than 1.0 is faster than default. Higher than 1.0 is slower than default.

reduceLatency

bool

default: "false"

Reduces the latency of response, at the cost of some possible mispronunciation of digits and abbreviations.