services/frontend/src/features/liveStream/model/liveStream.store.ts

@@ -11,7 +11,7 @@ type LiveStreamState = {
   lastMessageAt: number | null;
 
   // WS frequency control
-  requestedHz: number; // 1..60
+  requestedHz: number; // 0.1-60
   setRequestedHz: (hz: number) => void;
 
   // Window selection
@@ -33,14 +33,14 @@ const PEAK_WINDOW_MS = 3_000;
 const WINDOW_OPTIONS_MS = [15_000, 30_000, 60_000, 120_000, 300_000] as const;
 const DEFAULT_WINDOW_MS = 60_000;
 
-const MIN_HZ = 1;
+const MIN_HZ = 0.1;
 const MAX_HZ = 60;
 const DEFAULT_REQUESTED_HZ = 10;
 
 // If there are more than 600 points in selected window -> downsample
 const MAX_CHART_POINTS = 600;
 
-// UI updates not more than ~12 Hz (10–15 Hz recommended)
+// UI updates not more than ~12 Hz
 const UI_FLUSH_HZ = 12;
 const UI_FLUSH_MS = Math.round(1000 / UI_FLUSH_HZ);
 
@@ -58,10 +58,12 @@ let lastSeenSample: AudioSample | null = null;
 
 function clampInt(v: number, min: number, max: number): number {
   if (!Number.isFinite(v)) return min;
-  return Math.max(min, Math.min(max, Math.trunc(v)));
+  return Math.max(min, v);
 }
 
-function isAllowedWindowMs(ms: number): ms is (typeof WINDOW_OPTIONS_MS)[number] {
+function isAllowedWindowMs(
+  ms: number,
+): ms is (typeof WINDOW_OPTIONS_MS)[number] {
   return (WINDOW_OPTIONS_MS as readonly number[]).includes(ms);
 }
 
@@ -81,7 +83,8 @@ function buildWsUrl(base: string, hz: number): string {
 
 function trimPeakWindow(nowSampleMs: number): void {
   const cutoff = nowSampleMs - PEAK_WINDOW_MS;
-  while (peakWindow.length && peakWindow[0]!.timeMs < cutoff) peakWindow.shift();
+  while (peakWindow.length && peakWindow[0]!.timeMs < cutoff)
+    peakWindow.shift();
 
   // Safety cap: even at 60 Hz, 3 sec ~ 180 points; allow some jitter
   if (peakWindow.length > 512) peakWindow = peakWindow.slice(-512);
@@ -255,4 +258,3 @@ export const useLiveStreamStore = create<LiveStreamState>()((set, get) => {
     },
   };
 });
-

services/frontend/src/pages/dashboard/ui/DashboardPage.tsx

@@ -7,9 +7,9 @@ export function DashboardPage() {
   return (
     <div className="mx-auto w-full max-w-6xl p-4 md:p-6">
       <header className="mb-4">
-        <h1 className="text-2xl font-semibold">STM32 Audio Dashboard</h1>
+        <h1 className="text-2xl font-semibold">STM32 Audio Analyze Dashboard</h1>
         <p className="text-sm text-muted-foreground">
-          WebSocket 10 Hz: rms_db [-50..0], freq_hz [20..8000]
+          Частоты: 129 Гц - 5,5 кГц; Громкость: -50 - 0 дБ
         </p>
       </header>
 

services/frontend/src/widgets/audioLive/ui/AudioLiveWidget.tsx

@@ -13,7 +13,7 @@ import {
 import { freqToNote } from "../../../entities/audioSample/lib/note";
 import { formatTimeHHMMSS, isStale } from "../../../shared/lib/time";
 
-const HZ_OPTIONS = [1, 5, 10, 15, 30, 60] as const;
+const HZ_OPTIONS: number[] = [0.1, 0.25, 0.5, 1, 2.5, 5, 10, 15] as const;
 
 const WINDOW_OPTIONS: Array<{ label: string; ms: number }> = [
   { label: "15s", ms: 15_000 },