chore: added a sample that shows the use of the profanity filter (#678)

Author: b-loved-dreamer

speech/profanityFilter.js

@@ -0,0 +1,59 @@
+// Copyright 2020 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+'use strict';
+
+function main(gcsUri) {
+  // [START syncRecognizeWithProfanityFilter]
+  // Filters profanity
+
+  /**
+   * TODO(developer): Uncomment these variables before running the sample.
+   */
+  // const gcsUri = 'gs://my-bucket/audio.raw';
+
+  async function syncRecognizeWithProfanityFilter() {
+    // Imports the Google Cloud client library
+    const speech = require('@google-cloud/speech');
+
+    // Creates a client
+    const client = new speech.SpeechClient();
+
+    const audio = {
+      uri: gcsUri,
+    };
+
+    const config = {
+      encoding: 'FLAC',
+      sampleRateHertz: 16000,
+      languageCode: 'en-US',
+      profanityFilter: true, // set this to true
+    };
+    const request = {
+      audio: audio,
+      config: config,
+    };
+
+    // Detects speech in the audio file
+    const [response] = await client.recognize(request);
+    const transcription = response.results
+      .map(result => result.alternatives[0].transcript)
+      .join('\n');
+    console.log(`Transcription: ${transcription}`);
+  }
+  syncRecognizeWithProfanityFilter().catch(console.error);
+  // [END syncRecognizeWithProfanityFilter]
+}
+
+main(...process.argv.slice(2));

speech/system-test/profanityFilter.test.js

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+// Copyright 2020 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/* eslint-disable */
+
+'use strict';
+
+const {assert} = require('chai');
+const {describe, it} = require('mocha');
+const cp = require('child_process');
+
+const execSync = cmd => cp.execSync(cmd, {encoding: 'utf-8'});
+const storageUri = 'gs://cloud-samples-tests/speech/brooklyn.flac';
+const text = 'how old is the Brooklyn Bridge';
+
+describe('profanityFilter', () => {
+  it('should run profanityFilter', async () => {
+    const stdout = execSync(`node profanityFilter.js ${storageUri}`)
+    assert.match(stdout, /Transcription:/ );
+  });
+});