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Sweet Hello LogoSweet Hello

From idea to live calls in three steps.

We design your call flow, connect the tools, and prove value fast—without heavy lift on your side.

1

Design the flow

We map intents, guardrails, and success criteria with you. Clear scripts, fallbacks, and escalation paths.

2

Integrate your systems

Connect CRM/help desk, data stores, calendars, and webhooks. Secure secrets. Add analytics.

3

Launch & learn

Start small, measure outcomes, and iterate. We’ll harden for scale once the value is clear.

Stats at a glance

Real-time speech

sub-100 ms first-audio typical*

Multilingual

25–30+ languages*

Telephony-ready

μ-law / A-law / PCM

Streaming

WebSocket / HTTP chunked

Supported Outputs

PCM
μ-law
A-law
Opus
MP3
WAV
8k/16k sample rate

Tiny code glimpse

// Stream text → audio (illustrative)
import { streamTTS } from "@/lib/tts";
const audio = await streamTTS({
  text: "Hello from Sweet Hello.",
  voice: "CleanFemale",
  format: "pcm_mulaw",
  sampleRate: 8000
});
// play(audio) — in product this would pipe to a player/telephony

Best practices for low latency

Shorter chunks, pre-warm voices, cache prompts, avoid long SSML pauses, stream as you synthesize.

Illustrative Data Flow

CallerStreaming TTS/ASROrchestrationIntegrationsAnalytics

(CRM/helpdesk/payments)

Mini-FAQ