How to Develop a Voice Assistant App with AI and ML for 2024

Voice assistants powered by artificial intelligence (AI) and machine learning (ML) are becoming increasingly popular. As we enter 2024, developing your own custom voice assistant app is easier than ever.

In this comprehensive blog post, we will explore the end-to-end process for building a feature-rich voice app tailored to your unique needs using the latest AI ML app development technologies.

Why Build a Custom Voice Assistant? 

Consumer demand for intelligent voice-controlled assistants like Alexa and Siri continues to accelerate rapidly. According to recent research, over 65% of searches are expected to be conducted via voice by 2024. Building your own custom voice app allows you to deliver personalized experiences and capabilities that strengthen engagement with your audience. Additional key reasons companies are investing in developing proprietary assistants include:

  • Enhanced Brand Identity and Loyalty: 

Creating customized conversations, phrases, jokes or references that reflect your organization's values and culture fosters stronger connections with customers. Unique experiences outperform generic assistants.

  • Competitive Differentiation: 

With popular assistants like Alexa on the market, building unique features and integrations can help your solution stand out. Consider industry-specific use cases or proprietary data sources.

  • More Control Over Data: 

Building your own voice assistant allows you to directly collect first-party conversation data related to customer needs, intent and behavior. This data can fuel personalized experiences and other initiatives.

  • New Monetization Opportunities: 

Voice assistants open up new revenue streams like voice commerce purchases, custom skills or promotions. They also reduce customer support costs by automating common queries.

How to Build Your Custom Voice App in 5 Steps

Follow this comprehensive guide covering the key development phases to create your own feature-rich voice assistant mobile app leveraging the power of AI app development:

Define Your Voice App's Use Cases and Features

Kick off your custom voice assistant project by clearly defining the goals, target audience, primary features and capabilities. Outline the core user needs or pain points your app aims to solve. 

Ask guiding questions like: What conversational tasks will my assistant be able to complete? How will the app fit into our existing customer journeys and enhance experience? What types of sensitive customer data might it need to access? What are some smart integrations with internal systems or external services to boost value?

This discovery process lays the foundation for delighting customers with an intelligent assistant tailored to them.

Collect and Annotate Voice Data for Training ML Models 

A sufficiently large and high-quality dataset is crucial for training robust AI models that accurately understand diverse voice commands and questions. 

Steps for building your training data include:

Recording Hundreds of Hours of Audio: Leverage professional voice actors or internal employees to capture utterances and responses that mimic real-world user interactions across various contexts your app is designed for.

Transcribing Audio to Text

Manual work or API services will be needed to transcribe audio clips into text transcripts for the next steps.

Semantic Tagging with Entities and Intents: Annotate transcripts to highlight key entities users refer to (like product or service names) as well as the intents behind queries and commands.

Aggregating Public Datasets: 

Incorporate relevant open-source voice data matching your niche to augment training.

Proper annotation and tagging provides the critical training signals for your AI app development models.

Develop or Leverage ML Models 

The AI ML app development models below enable a voice interface and power core functionalities:

  • Automatic Speech Recognition (ASR): 

This model transcribes incoming voice audio into text for processing. Choices include training a deep neural network tailored to your data or leveraging cloud APIs like Google Speech-to-Text.

  • Natural Language Understanding (NLU): 

An NLU model classifies text queries by intent and parses entity references. Recurrent neural networks and pretrained models like BERT perform well for voice apps.

  • Text-to-Speech (TTS): 

Generating natural verbal responses using AI app development solutions are preferred over robotic pre-recorded clips. Deep learning TTS models like Tacotron synthesize human-like speech.

  • Dialog Management: 

The logic driving conversations may consist of rule-based scripts, AI ML app development intent classification and entity extraction, or ideally - end-to-end trained dialog models like Alexa's. 

Program Conversational Dialog Flows

Effective dialog management is critical for a seamless, logical and natural conversation flow - the hallmark of engaging voice apps. Key techniques include:

  • Natural Language Generation: 

Prepare dynamic variations of phrases and responses to keep conversations fresh.

  • Context Tracking: 

Maintain state on the history and context of the conversation to improve continuity and relevance.

  • Business Logic Integration: 

Connect to external data sources, internal systems and API endpoints to take requested actions and serve up intelligent responses. 

  • Intelligent Routing: 

Direct conversation flows dynamically based on intent classification confidence scores from your NLU model.

Conclusion

Intelligent voice assistants promise to transform customer engagement across industries. While the underlying AI ML app development continues rapid innovation, developing a mature, enterprise-grade voice app at scale still poses challenges like protecting data privacy, preventing bias in training data, and measuring tangible ROI beyond novelty value.

By taking an iterative, user-centric design approach and leveraging proven platforms, most organizations can navigate these hurdles to build standout voice apps delivering delight. As leaders like Consagous Technologies, a leading AI ML app development company have proven, creating conversational assistants tailored to your unique customers and use cases is more achievable than ever.

Ready to build the future of voice-powered customer engagement? Contact Consagous, leaders in building premium mobile app experiences fueled by AI app development. With a cross-functional team blending design, engineering and analytics talent, Consagous is pioneering voice assistant and chatbot solutions purpose-built for the enterprise. 

Let's explore how our AI app developers can transform your customer connections.